How to Get Rid of Dark Spots from Acne: Post-Inflammatory Hyperpigmentation Explained

Acne and pimples are frustrating enough on their own. But even after they heal, they often leave something behind: a dark spot that sits on the skin for weeks, sometimes months, looking almost worse than the original breakout did. If that sounds familiar, what you are dealing with is post-inflammatory hyperpigmentation, commonly known as PIH. It is one of the most searched skincare concerns in the world, and one of the most misunderstood.

This guide covers everything you need to know about PIH: what it is, why it happens, how long it takes to fade, which ingredients treat it most effectively, and how to build a routine that actually works. At the center of that routine is Tranexamic Acid, one of the most targeted, well-tolerated, and effective ingredients available for fading post-acne dark spots. You can find it in the INKEY Tranexamic Acid Serum, and it will be a constant thread throughout everything that follows.

If you want to start exploring the full range of products that address this concern, the INKEY hyperpigmentation collection is a good place to begin. But first, let us start with the science, because understanding what PIH actually is will help you treat it far more effectively.

What Is Post-Inflammatory Hyperpigmentation, and Why Does It Happen?

Post-inflammatory hyperpigmentation is the term for dark spots or patches of discoloration that appear on the skin at the site of healed acne or an area of inflammation. The pimple itself may be long gone, but the skin has left a record of it in the form of excess pigment. It is not a scar in the structural sense. There is no damage to the underlying skin tissue. It is, at its core, a pigmentation response. And understanding that distinction is the first step to treating it correctly.

When the skin experiences inflammation, whether from acne, a pimple, or any other form of irritation, it sends a signal to the melanocytes. These are the pigment-producing cells that live in the deeper layers of the skin. Under normal circumstances, melanocytes produce melanin at a steady, regulated rate. But when inflammation strikes, that regulation breaks down. The melanocytes overproduce melanin as part of the skin’s protective response, and that excess melanin deposits itself in the surrounding tissue. When the inflammation clears, the pigment remains. That is PIH.

The depth of that pigment matters enormously when it comes to treatment. Epidermal PIH sits in the upper layers of the skin. It tends to appear brown or tan in color and responds relatively well to topical skincare ingredients. Dermal PIH sits deeper, closer to the boundary between the epidermis and dermis. It appears gray-brown or even ashy in tone and takes considerably longer to fade. As DermNet NZ explains, the distinction between epidermal and dermal PIH is clinically significant and directly informs which treatments are likely to be effective. Both types can occur simultaneously, and in deeper skin tones, dermal PIH is more common.

PIH vs PIE: Understanding the Difference

PIH is frequently confused with a related but distinct condition called post-inflammatory erythema, or PIE. Both appear as marks left behind after a breakout. But they have different causes and require different approaches. PIH is brown or dark in color and is caused by excess melanin, the skin’s pigment. PIE is pink or red and is caused by dilated or damaged blood vessels beneath the skin’s surface. A simple test can help you tell them apart: press a clear glass firmly against the mark. If it disappears or fades significantly under pressure, it is likely PIE. If it remains visible, it is PIH. This distinction matters because the ingredients that fade PIH, including Tranexamic Acid and Niacinamide, are not the primary treatment for PIE. If you are unsure which type of post-acne mark you have, the INKEY guide to what type of hyperpigmentation do I have walks through the differences in detail.

It is also worth separating PIH from true acne scarring. PIH is a change in color. Acne scars are a change in texture, involving structural changes to the skin caused by collagen disruption during deeper inflammation. If you have both pigmentation and textural scarring, the INKEY blog on retinol for scarring and post-acne marks addresses the latter in depth and is worth reading alongside this guide.

What Causes PIH to Form, or Worsen?

The primary trigger for PIH is inflammation from acne and pimples. But several factors determine how severe the marks will be and how quickly they fade. Picking or squeezing pimples is one of the most significant aggravating factors. Squeezing does not just pop a pimple. It pushes bacteria and debris deeper into the skin, intensifies the inflammatory response, and dramatically increases the likelihood of PIH forming and the depth at which it sits. UV exposure is the other major culprit. Sunlight stimulates further melanin production. If existing PIH marks are exposed to UV without protection, they will darken and take significantly longer to fade. This is why SPF is not a nice-to-have in any PIH routine. It is the foundation.

Deeper skin tones are also more prone to PIH due to higher baseline melanin activity. Melanocytes in darker skin are more reactive to inflammation, producing a greater melanin response and creating marks that are both more visible and more persistent. The American Academy of Dermatology emphasizes that treating active acne early and effectively is one of the most important steps in preventing PIH in the first place.

How Long Does PIH Last?

This is the question most people search. The honest answer is: it depends. Superficial epidermal PIH can begin fading within a few months with consistent SPF use alone. Treated with targeted ingredients, visible improvement can appear in as little as four to six weeks. Deeper dermal PIH, particularly in darker skin tones, may take twelve months or more without the right intervention. UV exposure is the single biggest factor that resets the clock. Every day without sun protection is effectively a day the marks are not fading. The reassuring truth is that PIH is not permanent. With the right ingredients, the right routine, and consistent SPF, visible fading is achievable for all skin tones.

Now that the foundation is in place, the next section focuses on the specific ingredients that are proven to target PIH, and exactly how each one works.

The Best Ingredients to Fade Post-Inflammatory Hyperpigmentation

Knowing which ingredients to use is only half the equation. Understanding why they work is what gives you the confidence to use them consistently, and consistency is everything when it comes to fading PIH. The ingredients below target PIH through different mechanisms, which means using several of them together creates a more powerful, multi-pathway approach. Clinical evidence from the NCBI supports a layered ingredient strategy for PIH, particularly in skin of color, where single-ingredient approaches are less likely to be sufficient.

Tranexamic Acid: The PIH Specialist

Tranexamic Acid is the most targeted topical ingredient available for PIH specifically, and it deserves its place at the center of any PIH routine. Unlike brightening ingredients that work by generally inhibiting melanin or exfoliating the skin surface, Tranexamic Acid works upstream. It inhibits plasminogen activation, which blocks the signaling pathway between keratinocytes and melanocytes that tells the skin to overproduce pigment in response to inflammation. In other words, it targets the root cause of PIH at a cellular level, not just the symptom.

This mechanism gives Tranexamic Acid a significant advantage over other brightening ingredients. It does not exfoliate, so it does not carry the risk of causing irritation that could trigger further melanin production. It does not increase photosensitivity, so it can be used in both morning and evening routines without the caution required for acids or retinoids. It is suitable for all skin types and tones, including sensitive skin. It is considered pregnancy-safe. And it is compatible with almost every other ingredient in a well-built skincare routine. For a full deep dive into how Tranexamic Acid works, its safety profile, and how to incorporate it into your routine, the Tranexamic Acid ingredient guide covers everything in one place.

The INKEY Tranexamic Acid Serum contains 2% Tranexamic Acid alongside a 2% Acai Berry antioxidant complex and 2% Magnesium Ascorbyl Phosphate, a stable Vitamin C derivative that provides additional brightening without instability or irritation. At $14, it is one of the most accessible and effective PIH treatments available. Apply a pea-sized amount to the face and neck after cleansing and your Hyaluronic Acid Serum, morning and evening. Allow thirty minutes before applying moisturizer. Visible improvement typically begins within four to six weeks of consistent twice-daily use, with significant results at six to eight weeks.

Niacinamide: The Melanin Transfer Blocker

Where Tranexamic Acid works at the production level, Niacinamide works one step later in the pigmentation process. It inhibits the transfer of melanin from melanocytes to the surrounding skin cells at the surface, reducing how much pigment actually makes it into the visible layers of skin. The result is a visible reduction in dark spots over consistent use.

Niacinamide brings additional benefits that make it particularly well-suited to skin recovering from acne. It helps regulate excess oil production, visibly minimizes the appearance of pores, and calms redness. In short, it addresses several of the concerns that tend to accompany post-acne skin at once. The INKEY Niacinamide Serum contains 10% Niacinamide, a concentration that is effective without causing the flushing that can sometimes be associated with very high doses. Used alongside Tranexamic Acid, Niacinamide provides a complementary, multi-pathway approach to PIH: blocking production and blocking transfer simultaneously.

Vitamin C: The Brightening Antioxidant

Vitamin C is a well-established brightening ingredient with a particular strength: antioxidant protection. UV exposure and environmental pollution are among the key triggers that stimulate melanin production and worsen existing PIH. Vitamin C neutralizes those free radical triggers before they can stimulate further pigmentation, while also gently brightening the overall skin tone. It works synergistically with Tranexamic Acid, which blocks the inflammatory pigment pathway, while Vitamin C protects against the environmental inputs that feed that pathway.

The INKEY 15% Vitamin C + EGF Serum uses Ascorbyl Glucoside, a stable form of Vitamin C that converts on the skin to deliver brightening benefits without the oxidation instability that affects some Vitamin C formulas. It targets sun damage and hyperpigmentation while being gentle enough for daily use. Apply in your morning routine alongside Tranexamic Acid Serum for maximum combined brightening and protective effect. The INKEY Vitamin C ingredient guide provides further reading on stability, formulation, and how to get the most from this ingredient.

Azelaic Acid: The Multi-Tasker

Azelaic Acid occupies a unique position in PIH treatment because it targets two things simultaneously: the pigmentation itself, and the inflammation that caused it. It inhibits tyrosinase, an enzyme involved in melanin production, while also delivering meaningful anti-inflammatory activity at the skin surface. For PIH specifically, this dual action is logical and effective. You are not just addressing the mark. You are also calming the skin state that created it.

The INKEY 10% Azelaic Acid Serum for Redness Relief is particularly useful for skin that is simultaneously dealing with active acne, post-acne redness, and PIH marks. It is safe for most skin tones and can be layered with Niacinamide for complementary melanin-targeting benefits. If you are considering that combination, the INKEY guide on using Azelaic Acid and Niacinamide together offers detailed guidance on how to layer them effectively.

Starter Retinol and Advanced Retinal: The Cell Turnover Accelerators

Retinoids do not target melanin directly. Instead, they accelerate the rate at which skin cells turn over, pushing pigmented surface cells to shed faster and replacing them with fresher, less pigmented skin from below. This makes them an effective indirect treatment for PIH, particularly when combined with more targeted melanin-blocking ingredients like Tranexamic Acid.

The right retinoid depends entirely on your experience level. If you are new to retinoids, Starter Retinol is the correct starting point. It is clinically proven to smooth fine lines in seven days, with twice the effectiveness of standard retinol and a formula designed to minimize the irritation that puts many people off retinoids in the first place. For those with an established retinoid routine, Advanced Retinal Serum steps up to 0.2% retinal (retinaldehyde), a form of vitamin A that converts to retinoic acid on the skin more efficiently than retinol. It is clinically proven to work eleven times faster than standard retinol, targeting dark spots, wrinkles, and firmness in as little as one week.

Both are PM-only actives. Retinoids increase photosensitivity, so morning SPF is essential when using them. Introduce gradually, starting with two to three nights per week and building frequency as tolerated. If your skin is sensitive or prone to reactivity, build confidence with a Tranexamic Acid and Niacinamide routine first before introducing a retinoid. The INKEY Retinol ingredient guide is the complete reference for how to start, layer, and progress with retinoids safely.

Glycolic Acid: The Exfoliator

Glycolic Acid is an alpha hydroxy acid (AHA) that dissolves the bonds between dead skin cells, accelerating surface cell turnover and bringing newer, less pigmented skin to the surface more quickly. The INKEY Glycolic Acid Toner can be a useful addition to a PIH routine for those without sensitive skin. However, it requires a note of caution: exfoliating acids can sometimes worsen PIH, particularly in darker skin tones, if used too frequently or at concentrations that cause irritation. Irritation itself triggers melanin production, which is the opposite of the intended effect. For deeper skin tones especially, Tranexamic Acid is the safer and more targeted first-line choice.

SPF: The Step That Cannot Be Skipped

No ingredient list for PIH is complete without this one, because without it, everything else works significantly less effectively. UV exposure is the single biggest factor that slows PIH fading, darkens existing marks, and stimulates new pigmentation. The Dewy Sunscreen SPF 30 is lightweight, non-greasy, and hydrating, making it genuinely easy to wear daily under makeup. It is the protective layer that preserves the results your treatment actives are working to create. For further guidance on building sun protection into your routine year-round, the Essential Guide to Suncare and SPFcovers everything you need to know.

With a clear picture of which ingredients to use and why, the next step is bringing them together into a practical, step-by-step daily routine.

Your Step-by-Step INKEY Skincare Routine for PIH

Understanding the ingredients is essential. But having a clear, ordered routine is what turns that knowledge into results. This section pulls together the product recommendations into a practical AM and PM framework, with Tranexamic Acid Serum anchoring both routines as the daily non-negotiable. You can also shop the full hyperpigmentation collection and the blemish scars collection to explore the complete range.

Quick-Reference INKEY Products for PIH:

• Tranexamic Acid Serum — hero treatment, AM and PM, all skin types and tones
• Niacinamide Serum — melanin transfer blocker, AM and PM, particularly good for oily or combination skin
• 15% Vitamin C + EGF Serum — brightening antioxidant, AM
• 360 Acne Clearing Serum — treats active acne before, during, and after to reduce PIH at source
• SPF  — non-negotiable daily protection

Morning Routine

1. Cleanse — Use a gentle cleanser suited to your skin type. The Salicylic Acid Cleanser, with 2% Salicylic Acid and 1% Zinc, is an FDA-recognized treatment for acne and works well for acne-prone skin, helping to keep pores clear and reduce the frequency of breakouts that lead to new PIH.
2. Hyaluronic Acid Serum — Apply to damp skin immediately after cleansing for deeper hydration. A hydrated skin barrier is a more resilient one.
3. Tranexamic Acid Serum — Apply a pea-sized amount across the face and neck. Wait thirty minutes before applying moisturizer.
4. Niacinamide Serum — Layer after Tranexamic Acid for combined melanin-blocking coverage. Alternatively, use the 15% Vitamin C + EGF Serum here if brightening is your primary morning focus.
5. Moisturizer — Use a moisturizer suited to your skin type. A lightweight option works well for oily skin; a richer formula suits drier or more barrier-compromised skin.
6. SPF — Final step, every single morning. This is not optional.

Evening Routine

1. Double cleanse — Begin with an oil cleanser such as the Oat Cleansing Balm to dissolve SPF and makeup thoroughly. Follow with a second cleanse.
2. Hyaluronic Acid Serum — Apply to damp skin as before.
3. Tranexamic Acid Serum — Apply pea-sized amount as in the morning. Wait thirty minutes before continuing.
4. Retinoid (on rotation) — Introduce gradually, starting at two to three nights per week and building as your skin adapts:
   • New to retinoids: Starter Retinol, gentle and non-irritating, the ideal entry point.
   • Experienced retinoid user: Advanced Retinal Serum, 0.2% retinal, eleven times faster than standard retinol.
5. Moisturizer — Seal in hydration and support barrier recovery overnight.

Routine Notes

Tranexamic Acid is the only active in this routine that works AM and PM without restriction or additional caution. It is the constant. Everything else rotates around it. Retinoids are PM only, and new users should build frequency slowly. SPF in the morning is not optional regardless of the weather. Without it, the progress your actives are building will be consistently undermined.

For detailed layering guidance and compatibility notes, the Tranexamic Acid complete routine guide is the most comprehensive reference available.

“Amazing product. I used it consistently for around two months and saw amazing changes to my dark pigmentation.” — Molly, verified INKEY customer

That kind of result is not unusual. But it requires consistency, and it requires SPF. Now that the routine is in place, the next step is making sure new PIH does not form in the first place.

How to Stop Acne Leaving Dark Spots

The most effective way to reduce PIH is to reduce the depth and duration of inflammation that causes it. This means treating active acne quickly and carefully, not just waiting for it to resolve on its own. Prevention is not a separate topic from treatment. It is part of the same strategy.

The single most impactful thing you can do to prevent PIH is straightforward: do not pick or squeeze pimples. It feels counterintuitive when a pimple is visible and tempting to deal with. But squeezing pushes bacteria and fluid deeper into the skin, dramatically intensifies the inflammatory response, and significantly increases both the likelihood of PIH forming and the depth at which it sits. INKEY’s own guide on whether you should squeeze your spots sets out exactly why this makes things worse, and what to do instead. The answer is: treat it properly and protect it.

Treat Acne Early and Effectively

The faster and more gently you can resolve active acne, the less inflammation accumulates, and the smaller the PIH risk. This is where targeted acne treatments earn their place in a PIH-conscious routine.

The 360 Acne Clearing Serum is designed specifically for this purpose. It contains Dioic Acid and 2% Salicylic Acid, working before, during, and after a breakout to reduce oil, clear active acne, and begin fading any post-acne marks that follow. It is a single product that addresses all three stages of the acne cycle, making it a practical and efficient addition to any routine focused on preventing PIH at source.

The Hydrocolloid Invisible Pimple Patches serve a dual purpose. They absorb excess fluid and active bacteria from the pimple overnight, accelerating healing. And crucially, they create a physical barrier that prevents picking and squeezing. Containing 99% Hydrocolloid alongside 0.4% Salicylic Acid and 0.4% Succinic Acid, they are invisible under makeup and effective enough to make a visible difference to pimple size and healing time. Protecting a pimple from being touched is one of the most underrated steps in PIH prevention.

Keep the Skin Barrier Strong

A compromised skin barrier is more prone to inflammation, and more inflammation means more PIH. Gentle cleansing that removes impurities without stripping the skin is essential. The Salicylic Acid Cleanser, with 2% Salicylic Acid and 1% Zinc, is an FDA-recognized treatment for acne. It clears congestion and targets breakouts without disrupting the barrier integrity needed for healthy, less reactive skin.

The Beta Hydroxy Acid (BHA) Serum addresses the root cause of congestion by working inside the pore, dissolving the buildup of oil and dead skin cells that leads to breakouts. Fewer breakouts mean fewer inflammatory episodes, and fewer inflammatory episodes mean less PIH forming in the first place. Prevention really does begin at this stage.

SPF Is Prevention Too

UV exposure does not just worsen existing PIH. It can contribute to new pigmentation forming, particularly in skin that is already sensitized by recent inflammation. There is no reason to skip it. Apply it every morning as the final skincare step, and reapply if you are spending extended time outdoors.

You can explore the full range of acne-focused products in the blemishes and breakouts collection. Prevention and treatment work best as a unified strategy.

PIH affects all skin tones, but its presentation and persistence vary significantly depending on skin depth, which means the approach to treatment needs to account for that variation.

PIH on Darker Skin Tones: What to Know and What to Use

PIH does not affect all skin tones equally. To understand why, it helps to first understand how hyperpigmentation works at the cellular level - people with medium to deep skin tones are significantly more prone to PIH, and when it develops, it tends to be more intense and more persistent

Deeper dermal PIH, the gray-brown, persistent type that sits below the epidermis, is more frequently seen in skin of color. As noted in guidance from the Skin of Color Society, PIH is one of the most common dermatological concerns in patients with skin of color and one of the most undertreated, partly because many mainstream brightening approaches were not developed with these skin tones in mind.

Why Harsher Ingredients Can Backfire

This is a critical point that is not always communicated clearly. Some brightening ingredients, particularly exfoliating acids at high concentrations or used too frequently, can cause irritation. In darker skin tones, that irritation triggers a stronger melanin response, potentially deepening the very marks you are trying to fade. The treatment becomes part of the problem. This is why ingredient selection and frequency matter so much for deeper skin tones, and why starting slow is always the correct approach.

The Recommended Ingredient Approach for Deeper Skin Tones

Tranexamic Acid is the preferred PIH ingredient for deeper skin tones for precisely the reasons already outlined. It does not exfoliate. It does not cause photosensitivity. It does not risk triggering further irritation-driven pigmentation. It works at the melanin production pathway level, targeting the signaling process that causes melanin overproduction without disturbing the skin surface. According to clinical evidence from the NCBI, Tranexamic Acid has a strong safety and efficacy profile across a range of skin tones. The Tranexamic Acid Serum is the appropriate first active for anyone with a deeper skin tone dealing with PIH, and the Tranexamic Acid pillar page provides full guidance on how to incorporate it.

Niacinamide is an equally safe complement for deeper skin tones. The Niacinamide Serum adds melanin transfer inhibition without risk of irritation, making it an ideal layer alongside Tranexamic Acid. The 10% Azelaic Acid Serum for Redness Relief is another well-tolerated option, addressing both inflammation and pigmentation without the irritation risk of stronger exfoliating acids.

For retinoids, the recommended entry point for deeper skin tones is Starter Retinol. Its gentle, clinically tested formula minimizes the irritation risk that makes standard retinoids a cautious proposition for skin that is prone to reactive pigmentation. Build gradually. Use SPF without fail. Once your skin has fully adapted over several weeks, you can consider stepping up to Advanced Retinal Serum for more accelerated cell turnover.

Glycolic Acid can be introduced with care at lower frequency. It is not a first-line recommendation for deeper skin tones. If irritation occurs, stop immediately and return to the Tranexamic Acid and Niacinamide foundation.

The Honest Timeline

PIH in deeper skin tones requires patience. The marks are deeper, the melanin response is stronger, and fading takes longer. But it is treatable. Consistent daily use of Tranexamic Acid Serum, Niacinamide Serum, and SPF, without gaps and without picking at active acne, produces visible improvement. It simply requires more weeks of commitment than lighter skin tones may need. The progress is real. The routine is the same as anyone else’s. The timeline is longer. That is all.

With a comprehensive understanding of PIH, its treatment, its prevention, and its particular dynamics in deeper skin tones, the final section addresses the most frequently asked questions in one clear, direct place.

Frequently Asked Questions About Post-Inflammatory Hyperpigmentation

Do dark spots from acne go away on their own?

Yes, PIH can fade on its own over time. However, without targeted treatment and daily SPF, this process can take many months or even years, depending on the depth of the pigmentation and your skin tone. Treating with the right ingredients, particularly Tranexamic Acid Serum, significantly accelerates the fading process and reduces the time you spend waiting for results.

Is post-inflammatory hyperpigmentation permanent?

No. PIH is not permanent. Even deeper dermal PIH, which can persist for a year or more without treatment, will fade with consistent use of targeted ingredients and daily SPF. The key word is consistent. There is no shortcut, but there is a reliable path.

How long does post-inflammatory hyperpigmentation take to fade?

Superficial epidermal PIH can begin fading within four to eight weeks of consistent targeted treatment. Deeper dermal PIH may take three to twelve months or longer. The timeline depends on the depth of the pigmentation, your skin tone, the consistency of your SPF use, and how regularly you apply your treatment actives. Starting treatment as soon as acne resolves gives you the best possible head start.

Does niacinamide help with post-inflammatory hyperpigmentation?

Yes. Niacinamide works by inhibiting the transfer of melanin from pigment-producing cells to the surrounding skin cells, reducing the visible appearance of dark spots over time. The INKEY Niacinamide Serum contains 10% Niacinamide and works effectively alongside Tranexamic Acid for a complementary, multi-pathway approach to PIH.

Does azelaic acid help with post-inflammatory hyperpigmentation?

Yes. Azelaic Acid targets both the pigmentation itself and the underlying inflammation that caused it. This dual action makes it a logical and effective choice for PIH. The INKEY 10% Azelaic Acid Serum for Redness Relief can be used alongside Niacinamide for combined anti-inflammatory and melanin-inhibiting effects.

Is PIH the same as acne scarring?

No, and this distinction matters for treatment. PIH is a change in color caused by excess melanin deposited after inflammation. It has no structural component. True acne scarring involves physical changes to the skin, such as indentations (atrophic scars) or raised tissue (hypertrophic scars), caused by collagen disruption during deeper inflammation. PIH responds to brightening and melanin-targeting ingredients. Structural scars benefit from ingredients that support collagen remodeling, including retinoids. If you are new to retinoids, start with Starter Retinol. If you are experienced, Advanced Retinal Serum delivers more accelerated results. The full guide on retinol for scarring and post-acne marks covers the scar-specific approach in detail.

Can I use Tranexamic Acid and Niacinamide together?

Yes. They are safe to layer and work through complementary mechanisms. Apply Tranexamic Acid Serum first and allow it to absorb fully. Then apply Niacinamide Serum. Follow with moisturizer after a further thirty minutes. This combination addresses PIH through both the production and transfer stages of the melanin pathway simultaneously.

Can I use Tranexamic Acid and a retinoid together?

Yes. Use Tranexamic Acid in both AM and PM routines. Use your retinoid in the evening only. For beginners: Starter Retinol. For experienced users: Advanced Retinal Serum. They can be applied in the same PM routine, with Tranexamic Acid applied first and allowed to absorb before the retinoid. If your skin is new to retinoids, applying them on alternate evenings initially reduces the risk of irritation. Always follow with SPF the next morning, without exception. The Tranexamic Acid pillar page includes a full layering guide for complete routine confidence.

Dark Spots from Acne Are Treatable: Start Here

Post-inflammatory hyperpigmentation is caused by the skin’s response to inflammation from acne and pimples, which triggers an overproduction of melanin that lingers long after the original breakout has healed. It is not permanent. It is not a sign of damage that cannot be reversed. It is a pigmentation response, and pigmentation responds to the right ingredients used consistently over time.

The most effective approach combines ingredients that target PIH through different mechanisms: Tranexamic Acid to block melanin production at the inflammatory pathway, Niacinamide to inhibit melanin transfer at the surface, Vitamin C to protect against the environmental triggers that worsen pigmentation, and SPF to protect every day, without exception. Retinoids and Azelaic Acid provide additional pathways for those whose skin can tolerate and benefit from them. None of these ingredients work overnight. All of them work reliably when used consistently.

The knowledge to treat PIH well is not complicated. The ingredients exist. The routine is manageable. And the results, within weeks of consistent daily use, are real. INKEY’s approach has always been the same: effective skincare powered by knowledge, at prices that do not require compromise. The Tranexamic Acid Serum starts at $14. That is where most PIH routines should begin.

For a full breakdown of hyperpigmentation types, causes, and treatment options, visit our complete hyperpigmentation guide.

Explore the full INKEY hyperpigmentation range to build the right routine for your skin. Not sure where to start? Take the Skincare Quiz for a personalized routine built around your specific concerns in two minutes. Or build your own routine and save up to 20% by curating the products that work for you.

The marks will fade. The knowledge is here. The next step is yours.