Skip to main content
Two tubes of The Inkey List Advanced Retinal Serum on a white background
Woman with visible signs of aging, showing product benefits on a white background.
Advertisement for a skincare product showing a close-up of a person's face with text claiming visible wrinkle reduction.
Yellow skincare product with text on how to layer a routine
Skincare product with text detailing its ingredients and benefits on a white background
Yellow cream on a finger with usage instructions text overlay
Advertisement for skin care product showing a woman's face with a yellow patch, text about skin improvement, and participant details.
Before and after comparison of skin treatment showing firmer, more lifted skin.
Before and after comparison of skin radiance with text indicating improvement.
Before and after comparison of a skin treatment on a person's forehead.
Before and after comparison of skin treatment on a person's face, showing reduced blemishes.
Inkey Advanced Retinal Serum bottle held by a hand with text about retinal speed.
Two skincare serums with labels for 'Starter Retinol Serum' and 'Advanced Retinol Serum', and text describing their uses.
Woman with gray hair holding a skincare product, with text indicating her name and age.
Woman holding a skincare product with 'Sandra, Age 66' text
Retinal stain on skin with advice on prevention and treatment.
Yellow serum bottle with text explaining color variation

Advanced 0.2% Retinal Serum Duo

Clinically proven to deliver anti-aging results 11x faster than standard retinol** - with visible improvements in just 1 week*

4.6
Rated 4.6 out of 5 stars
4.6 Stars (163 Reviews)
$41.80 $44.00 / 15ml Duo

What you get: A high-strength Retinal serum, clinically proven to target all 5 visible signs of aging, without irritation - smoothing deep wrinkles, fading dark spots, visibly firming and lifting while boosting skin’s luminosity. Perfect for experienced retinoid users ready to upgrade their anti-aging skincare routine.

Why it works: Formulated with 0.2% encapsulated Retinaldehyde, proven to work 11x faster than standard Retinol***, to accelerate cell turnover, promote collagen production and improve skin elasticity. Enhanced with 2% Sirtalice to visibly lift, tighten and smooth skin in as little as 30 minutes****. Unlike standard retinol serums that require multiple conversion steps, our retinaldehyde formula converts directly to retinoic acid in just one step - delivering faster, more effective anti-aging results.

How it feels: Lightweight, hydrating and fast-absorbing. Skin feels instantly nourished, never drying.

When to use: PM only, 2-3 nights a week to start. Increase frequency as your skin builds tolerance. Always follow with moisturizer and use SPF the next morning.


*** G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378

**** Clinical data from ingredient study

Suitable for:

  • Experienced retinoid users
  • All skin types

Targets:

  • Deep Wrinkles
  • Dark Spots
  • Loss of firmness
  • Dullness

Awards & Features

Advanced Retinal Technology: The Next Level Beyond Retinol

Retinoids are the gold-standard for skin longevity - helping improve the look of wrinkles, dark spots and loss of firmness. This Advanced Retinal Serum is for experienced retinol users who want to level up results, without irritation.

  • Why it’s different: Retinal converts to active retinoic acid in one step, so it works 11x faster than standard retinol***. The formula pairs long-term skin renewal with instant firming.

  • What it does: 0.2% encapsulated retinal smooths wrinkles, refines texture and evens tone over time, while 2% Sirtalice™ delivers visible, surface-level firming in as little as 30 minutes**.

  • The results? Skin looks smoother, firmer, and brighter - from 1 week*

Shipping info

  • Standard USA Tracked Shipping from $7.95* (2-5 business days*). FREE on orders over $40.
  • Standard Tracked Shipping rates per state:
  • $7.95 – Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia,West Virginia, Wisconsin, Wyoming
  • $8.95 – Alaska, Arizona, California, Hawaii, Idaho, Nevada, Oregon, Washington


We are currently unavailable to ship to Guam, Puerto Rico or the US Virgin Islands due to carrier restrictions.  

  • *Please note the above shipping timelines are estimates and not guaranteed. Sometimes there may be delays – e.g. carrier delays, logistics, bad weather or things out of our control.   


Find out more about shipping here.

Our team can be reached via our contact us page with any further queries you have or email help@theinkeylist.com for any queries on delivery or taxes. 

Track the status of your parcel with
our trusted couriers

Still not sure?

Take our Skin Quiz, choose your personalized routine and get FREE products.

Take The Quiz
  • Before and after showing results of Advanced 0.2% Retinal Serum Duo
  • Before and after showing results of Advanced 0.2% Retinal Serum Duo
  • Before and after showing results of Advanced 0.2% Retinal Serum Duo
  • Before and after showing results of Advanced 0.2% Retinal Serum Duo
4.6
Rated 4.6 out of 5 stars
Based on 163 reviews
Total 5 star reviews: 126
Total 4 star reviews: 23
Total 3 star reviews: 8
Total 2 star reviews: 2
Total 1 star reviews: 4
Reviews Summary
Customers say this serum improves skin texture, reduces fine lines, and enhances brightness and glow. Many report visible results within weeks, with improved pore appearance and more even skin tone. The lightweight formula absorbs quickly without irritation, making it suitable for sensitive skin. Common feedback highlights its gentle nature and effectiveness compared to other brands. Some note the yellow tint and small tube size as drawbacks, while a few mention minimal results or initial adjustment periods. Overall, users appreciate the product's performance and value.
163 reviews
  • Tanya H.
    Verified Reviewer
    Reviewing
    Advanced 0.2% Retinal Serum
    I recommend this product
    Age Range 45 - 54
    Skin Type Normal
    Skin Concerns Fine Lines and Wrinkles, Hyperpigmentation, Damaged Skin Barrier, Dull Skin
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Suitability I don’t have sensitive skin
    Rated 5 out of 5 stars
    Yesterday
    My OG retinal

    I’ve been using this now for 6 months and it is literally one of the best things I’ve used on my face!! I refuse to use anything else and this proves you don’t need to spent loads of money on retinal to get amazing results!

  • Catherine W.
    Verified Buyer
    Reviewing
    Advanced 0.2% Retinal Serum
    I recommend this product
    Age Range 55 - 64
    Skin Type Normal
    Skin Concerns Redness, Hyperpigmentation, Dryness, Fine Lines and Wrinkles, Under Eye Circles
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 1 month - 3 months
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    2 days ago
    Advanced retinal serum

    I'm really enjoying this new product. My skin does not react to it. This retinal is easy to apply and feels lovely on my skin.

  • Caroline W.
    Verified Buyer
    Reviewing
    Advanced 0.2% Retinal Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Normal
    Skin Concerns Redness, Fine Lines and Wrinkles, Dryness, Under Eye Circles
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    4 days ago
    Great product

    I’ve been using this regularly for a few months and I feel it has really helped with my deep forehead wrinkles, as much as any topical product can. It doesn’t irritate my skin and I have had no issues with it