The INKEY List
Advanced 0.2% Retinal Serum K5 - 15ml
Advanced 0.2% Retinal Serum K5 - 15ml
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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
How to Use
Use PM only, 2-3 nights a week to start. Increase frequency as your skin builds tolerance. After cleansing and applying your hydrator, smooth a pea-sized amount into face and neck. Follow with your preferred moisturiser. Always use SPF in your AM routine.
Heads Up: When adding new products to your skincare routine, we always recommend patch testing.
Storage: Store in a cool, dry place (15–25°C). Keep out of direct sunlight. Avoid eyes. For external use only. Keep out of reach of children. *Clinical study of 26 participants over 8 days.
Key Claims
- Clinically proven to visibly reduce deep wrinkles in just 1 week*
- Over 80% saw visibly rejuvenated, radiant and more even skin in 2 weeks**
- Retinal works 11x faster than standard retinol***
- 85% saw firmer, more lifted skin in 4 weeks**
- 80% saw visible improvement in skin radiance**
*8-week clinical study of 26 participants
** 8-week consumer trial of 105 participants
*** G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378
We Give A Care
Skincare has become complicated. Too many ingredients, too many opinions, and too many products promising everything.
At The INKEY List, we believe you don't need more skincare, you need clarity you can trust. That's why we take the science and make it simple. We help people understand their skin, find the right ingredients, and build routines that deliver real results. Through innovative, science-backed formulas, we make effective skincare accessible to everyone. Because we care about great skincare for everyone.
Clear guidance. Proven ingredients. Real results.
Because at The INKEY List, We Give A Care.
- Approved under the Cruelty Free International Leaping Bunny programme.
- 100% of our packaging is recyclable.
- Certified by The Vegan Society.
- Dermatologically tested Clinically tested Fragrance-free Vegan + Cruelty-free Gluten-free Sulphur-free Sulphate-free Silicone-free Soya-free.
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