Welcome to the INKEY Blog. Where we spread and share our skincare knowledge with you!

Retinol is one of the most proven ingredients for improving texture, signs of ageing, and cellular turnover, but its potency means it must be used thoughtfully. Conflicting advice often oversimplifies retinol pairing, yet effective routines rely on understanding ingredient interactions, timing, and skin barrier support. Whether you’re starting with INKEY’s Starter Retinol or using our Advanced Retinal that works up to 11 times faster, the right layering approach ensures maximum benefits while protecting skin health. This guide breaks down the science behind retinol compatibility into clear, practical advice so you can use retinoids with confidence—not caution.

How often should you double cleanse? For most people, the answer is simpler than you might think: once every evening. Double cleansing is designed to remove the buildup of SPF, makeup, excess oil, and daily environmental pollutants that accumulate on the skin throughout the day. In this guide, we explain the science behind the two-step cleansing method, why evening is the ideal time to do it, and how to adapt your routine based on your skin type. You'll also learn the signs your current cleansing routine may not be doing enough and how consistent double cleansing can help keep skin clearer, brighter, and more receptive to skincare.

Sensitive skin starts with the right cleanse. In this guide, we break down the everyday cleansing mistakes that quietly damage your skin barrier - from harsh foaming formulas to overwashing and hot water - and explain exactly what to look for in a gentle, barrier-supporting cleanser. Discover the ingredients that truly soothe reactive skin, why cleansing balms are one of the best formats for sensitive complexions, and the best fragrance-free cleansers to keep skin calm, hydrated, and comfortable every day.

Applying SPF every day is one of the best things you can do for your skin — but removing it properly is just as important. Because sunscreen is designed to resist water, sweat, and friction, a single cleanse often isn’t enough to fully remove it from the skin. Left behind, SPF residue can contribute to congestion, dullness, and reduced effectiveness of your evening skincare products. In this guide, we explain why sunscreen is so difficult to remove, the science behind double cleansing, and how to choose the right cleanser pairing for your skin type. Discover the simple routine that helps keep skin clear, balanced, and healthy.

Think those fine lines are early wrinkles? They may actually be dehydration lines. While dehydration lines and wrinkles can look similar, they have completely different causes - and require different solutions. Dehydration lines are temporary, surface-level lines caused by a lack of water in the skin and a weakened skin barrier, whereas wrinkles are deeper structural changes linked to collagen loss and ageing. In this guide, we break down how to tell the difference, where dehydration lines commonly appear, what causes them, and the ingredients that can help restore smoother, plumper-looking skin. From ectoin and hyaluronic acid to ceramides and barrier support, discover the most effective routine for reducing dehydration lines and improving skin hydration.

Dark spots won't fade if UV exposure keeps triggering them. Daily broad-spectrum SPF is the foundation of any hyperpigmentation routine, helping prevent existing marks from worsening while protecting the results of brightening ingredients like Tranexamic Acid, Vitamin C, and Niacinamide. Learn how sunscreen and targeted actives work together to visibly improve uneven skin tone.

Mineral vs chemical sunscreen: one of skincare’s biggest debates - and one of its most misunderstood. Both protect effectively against UV damage, but they differ in texture, finish, and wearability. This guide breaks down the real science behind both filter types, the truth about “chemical sunscreen” myths, and how to choose the SPF you’ll actually wear every day.

SPF 30 or SPF 50? The difference is smaller than most people think - but how you apply sunscreen matters far more than the number on the bottle. In this evidence-based guide, we break down what SPF ratings actually mean, why most people aren’t getting the protection they think they are, when SPF 50 is genuinely worth it, and how UV exposure changes across different US climates. From tanning myths to application mistakes, this is your practical, no-nonsense guide to choosing the right SPF for your skin, lifestyle, and daily routine.

Reapplying sunscreen is the part of SPF that actually keeps your skin protected - but for most people, makeup gets in the way. This guide explains why sunscreen needs topping up throughout the day, how often to reapply, and the easiest ways to layer SPF over makeup without ruining your base. From beauty blender techniques to common SPF mistakes, here’s everything you need to know for real-world sun protection.

Daily SPF is not just a summer habit - it is one of the most important long-term investments you can make in your skin health. In this guide, we break down the science behind year-round UV exposure, explain the difference between UVA and UVB rays, and explore why winter, cloudy days, indoor light through windows, and even daily commutes still expose your skin to cumulative damage. Backed by clinical research and UK seasonal UV data, this article explains exactly how daily broad-spectrum SPF helps prevent premature ageing, pigmentation, collagen breakdown, and long-term skin damage - while showing you how to build an effective winter skincare routine around it.

Stress can show up on your skin long before you realise it. Redness, dryness, dullness, breakouts, and sensitivity are often signs that the skin barrier is overwhelmed and struggling to repair itself. In this guide, we explain what stressed skin really is, what causes it, and the clinically backed ingredients - including Exosomes, Ectoin, PDRN, and Ceramides - that help restore calmer, healthier, more resilient skin.

The exosome skincare market is full of products boasting “billions of exosomes” - but particle count alone tells you very little about real efficacy. This guide explains why concentration, source quality, formulation design, and clinical evidence matter far more than marketing numbers. Learn how to decode exosome claims, understand what makes a high-quality serum, and discover the science behind The INKEY List’s clinically tested Exosome Hydro-Glow Complex.

Not all exosomes work the same way. In skincare, the source of an exosome - plant-derived or fermentation-derived - directly impacts how it interacts with skin, the evidence behind it, and the results it can deliver. This blog breaks down the science behind exosome sourcing, explaining the key differences in mechanism, research, and formulation so you can cut through the marketing noise and choose an exosome serum backed by real data.

Learn how long skincare products really last, what the PAO symbol means, and how to store your skincare properly to keep formulas safe, stable, and effective. From Vitamin C and retinoids to cleansing balms and eye creams, this complete guide explains what causes products to expire, when a skincare fridge helps (and when it doesn’t), plus the warning signs a product has gone off.

Skincare acids can transform your skin — when you know which one to use. From glycolic acid for glow and texture, to salicylic acid for breakouts and PHAs for sensitive skin, this guide breaks down exactly what each acid does, who it’s best for, and how to use it safely for clearer, brighter, healthier-looking skin.

Men’s skin is biologically different - producing more oil, experiencing regular shaving stress, and often dealing with larger pores, congestion, and sensitivity. This complete guide breaks down exactly how to build an effective men’s skincare routine, from cleansing and hydration to shaving care, beard maintenance, and product layering. Whether you are starting from scratch or refining your current routine, discover the essential ingredients, routines, and expert-backed tips that help keep male skin clear, healthy, and protected every day

Your skin doesn’t need the same routine all year round - and treating it like it does could be holding your skin back. From winter dryness and barrier disruption to summer oiliness and breakouts, seasonal changes directly affect how your skin behaves. In this complete guide, we break down exactly how to adapt your skincare routine for spring, summer, autumn, and winter, including the products to switch, the ingredients to prioritise, and the signs your skin is giving you each season. Whether your skin is feeling dehydrated, congested, dull, or sensitive, this guide will help you build a routine that works with your skin all year long.

Your skin deserves more than a one-size-fits-all routine. This complete skincare guide breaks down exactly how to build an effective AM and PM routine based on your skin type - whether you’re oily, dry, combination, sensitive, or blemish-prone. From identifying your true skin type to choosing the right actives, layering products correctly, and avoiding the most common skincare mistakes, this guide gives you everything you need to create a routine that actually works. Featuring step-by-step routines, expert ingredient advice, and tailored product recommendations from The INKEY List.

Discover the science behind glowing skin with a complete AM & PM skincare routine designed to target dullness at the source. From the nourishing cleanse of our Oat Cleansing Balm to the brightening power of Vitamin C + EGF and next-generation renewal from Exosome Glow Serum, this guide breaks down the ingredients, routines, and habits that create real, lasting radiance - backed by clinical results and expert skincare science.

“Salmon sperm serum” may sound like a viral skincare gimmick, but the science behind it is surprisingly credible. Known as PDRN, this clinically studied ingredient helps support collagen production, hydration, and skin renewal at a cellular level. In this guide, we break down what PDRN actually is, how it works, and why INKEY’s vegan PDRN Serum delivers all the benefits - without the salmon.

Crepey skin is the thin, papery texture that can develop on areas like the neck, décolletage, arms, hands, and under-eyes. Unlike expression lines, it affects larger areas of skin and is linked to structural changes such as declining collagen, elastin damage, and a weakened skin barrier.

In this guide, we break down the science behind crepey skin and explore evidence-based skincare solutions - from barrier-repairing ceramides to collagen-supporting retinoids - plus practical routines to help restore smoother, firmer-looking skin.

Glass skin is more than a viral trend — it’s the ultimate sign of healthy, deeply hydrated skin. In this guide, we break down what glass skin really means, the key ingredients that support it (like hyaluronic acid, ceramides, and niacinamide), and the step-by-step routine that helps you achieve a smooth, luminous glow. With consistent barrier care and hydration layering, glass skin is an achievable reality — not an impossible standard.

Red light therapy has become a popular non-invasive treatment for skin concerns like fine lines, redness, acne, and dullness. Using specific wavelengths of red and near-infrared light, it helps stimulate cellular energy, supporting collagen production, healing, and overall skin renewal.

In this guide, we explore how red light therapy works, the benefits backed by research, and key safety considerations. We’ll also highlight effective skincare alternatives that can deliver similar results, including clinically proven ingredients like retinoids, vitamin C, peptides, niacinamide, and ceramides — with targeted INKEY List products to help you achieve healthy, glowing skin without investing in a device.

In the world of regenerative skincare, two ingredients are leading the conversation: PDRN and retinol. Retinol has long been the gold standard for skin renewal, backed by decades of research and proven results. But PDRN represents a new generation of skin regeneration—working with the skin’s natural repair processes to boost glow, strengthen the barrier, and improve resilience with minimal irritation.

In this guide, we break down how PDRN and retinol work, their key benefits, potential side effects, and how to choose the right option for your skin goals. Whether you’re drawn to the instant radiance and barrier support of The INKEY List PDRN Serum, or the time-tested anti-ageing power of Starter Retinol and Advanced Retinal, this comparison will help you decide which approach—or combination—makes sense for your routine.

Your skin is constantly communicating beneath the surface—millions of microscopic messages coordinating repair, hydration, and regeneration every second. These messages are carried by exosomes: nano-sized cellular messengers that tell your skin exactly how to respond to damage, stress, and daily wear. Now, this breakthrough science is making its way into skincare. Exosomes don’t just sit on the surface—they help enhance your skin’s own communication systems, supporting collagen production, barrier repair, and visible radiance from within. Think of them as your skin’s internal text messages, delivering precise instructions where they’re needed most. Discover how exosome technology is redefining skin health and why it represents a new era of smarter, more efficient skincare.

Smart skinimalism is the 2026 skincare trend redefining results through simplicity. Backed by science, this approach prioritises skin barrier health and multi-functional ingredients over excessive layering. Discover why simplified routines can reduce irritation by up to 40% and how to build an effective, evidence-based 3-step routine for healthier, more resilient skin.

Retinol vs bakuchiol is one of the biggest debates in anti-aging skincare right now, with experts split between proven performance and gentle, natural alternatives. This guide cuts through the noise with clear, science-backed insights into how each ingredient works and how they compare. The truth is, there’s no single winner—retinol delivers powerful, research-backed results, while bakuchiol offers a gentler option for sensitive skin. The key is choosing what best suits your skin, lifestyle, and tolerance.

Effective anti-aging doesn’t need a 12-step routine or luxury price tags—it needs the right science-backed ingredients used consistently. In this guide, you’ll learn what actually causes skin to age, which actives are proven to work, and how to build simple AM/PM routines for real results. No hype—just honest skincare that fits your life (and your budget).

Introducing INKEY Lab's latest drop - Exosome Boosting Mask. A next-generation biodegradable dry sheet mask designed to deliver instant glow, hydration and supports the skin’s natural repair processes. Powered by exosome-boosting technology, it helps enhance ingredient delivery for deeper hydration, strengthens the skin barrier, and leaves skin looking smoother, plumper and more radiant in just 10 minutes. 

If your skin feels rough, looks dull, or gets stuck in a cycle of congestion, glycolic acid could be the game-changing ingredient you’ve been missing. From refining texture and boosting radiance on the face (hello, Glycolic Acid Toner) to smoothing stubborn body concerns like rough elbows, bumpy arms, and keratosis pilaris (meet the Glycolic Acid Exfoliating Body Stick), this powerhouse AHA works by gently dissolving the bonds that hold dead skin cells in place—revealing fresher, brighter skin underneath. In this guide, we’ll break down exactly how glycolic acid works, the proven benefits you can expect, and how to use it safely and effectively so you can get real results without the guesswork.

This science-backed guide explains exactly how retinol improves acne scars, dark spots, and red marks — and how to use it safely for real, visible results. Learn the difference between PIH, PIE, and true acne scars, how retinol works at a cellular level, and how to choose the right INKEY retinol strength for your skin. With step-by-step routines, realistic timelines, and clinically proven solutions, this guide gives you everything you need to transform post-acne skin with confidence.

Consider us your token skincare friend. Meet, Real Results with INKEY. This is our dedicated series where we pass off the mic to our very own customers, who will share their reviews and recommendations on some of our products.

Phytic Acid is an antioxidant Alpha-Hydroxy Acid (AHA) derived from micro-algae. It’s extracted from the natural environment first, then scaled up synthetically in bioreactors, which makes it a sustainable resource in the skincare industry.

If you’ve been exfoliating more than usual or using several actives in one go (think acids, retinols etc), you may experience certain symptoms that will point to over-exfoliation.  The most obvious symptoms include redness and irritation at the skin’s surface, which may also manifest through burning and inflammation. Learn how to prevent over-exfoliation and how to take care of skin that has been over-exfoliated

Toners are an excellent step to add into your routine as they work to deliver a range of benefits to skin and come in all different forms. Learn what a toner is, how to use one in your routine and more.

The texture of our skin can be a primary concern and range from bumpiness to dry patches or pitting. Out of balance skin texture can appear dull, dry, patchy and uneven. Learn about the approaches to help even the texture of the skin by incorporating various tips and INKEY List products in your skincare routine.