Crystal Retinal®
Award-winning Age-Defying Vitamin A Night Serum
6354 Reviews ★★★★★
Reveal younger-looking, radiant skin with just one tube of our iconic vitamin A night serum. Clinically proven to smooth stubborn wrinkles, brighten dark spots, decongest pores, and firm skin — all without irritation.
Crystal Retinal contains retinaldehyde (retinAL), a next-generation vitamin A that works 11x faster than standard retinol, with Medik8’s patented stability system to ensure potency and effectiveness until the very last drop.
It’s no wonder Crystal Retinal is the UK’s No.1 dermatological face serum.[3]
Key Benefits
Fast Wrinkle-Reducing Power
Clinically proven to visibly reduce wrinkles with just 1 tube*
*Independent clinical study, 33 participants, 12 weeks
Professional-Grade Results
Retinaldehyde works up to 11x faster than retinol**
**Siegenthaler et al., Biochemical Journal, 1990
Radiant, Youthful Skin
Improves texture, brightness, firmness & clarity
Effective Until the Last Drop
Medik8’s patented stability complex maintains potency
Customisable Strengths
Six progressive strengths for every skin type, including sensitive
Proven Results
✨ Visible results in as little as 10 days
97% felt their skin looked more youthful*
20% reduction in appearance of wrinkles*
20% reduction in visible hyperpigmentation*
11% increase in skin firmness*
100% found it gentle on skin*
*Independent clinical study on Crystal Retinal 6, 33 participants, 12 weeks
Available Strengths
Only at Medik8, Crystal Retinal comes in 6 progressive strengths (0.01% – 0.24% retinaldehyde).
Crystal Retinal 1 – Sensitive skin
Crystal Retinal 3 – Beginner
Crystal Retinal 6 – Regular user
Crystal Retinal 10 – Advanced
Crystal Retinal 20 – Experienced
Crystal Retinal 24 – Expert
Take our easy [Strength Finder Quiz] to discover yours.
How to Use
Apply a small amount to cleansed face in the evening.
Follow with your favourite Medik8 moisturiser.
Use 2-3 times a week, gradually building to nightly use.
Always apply sunscreen during the day.
Loved & Recommended
Join thousands of glowing reviews:
💬 “Finally, a product that actually delivers results. Medik8 blows even the most expensive brands away.” – SR, Age 46-60
💬 “Skin feels clearer, smoother, and fine lines have softened. Best retinal, period.” – MW, Age 36-45
Key Ingredients
Retinaldehyde (RetinAL) – Next-generation vitamin A, 11x faster than retinol
Hyaluronic Acid – Deep hydration and plumping
Vitamin E – Antioxidant protection
Medik8 Stability Complex – Ensures retinal potency until the last drop
The Science Behind the Formula
Crystal Retinal uses a patented retinal stabilisation system to preserve potency and deliver professional-grade results safely at home.
Complete Your Regime – CSA Philosophy
For 90% of age-defying skincare needs, combine:
Vitamin C (AM) – [C-Tetra® Luxe]
Sunscreen (AM) – [Advanced Day Ultimate Protect™ SPF 50+]
Vitamin A (PM) – Crystal Retinal®
Sustainability & Good to Know
100% recyclable packaging (where facilities exist)
Vegan & cruelty-free
Dermatologist-recommended
FAQs
Is Crystal Retinal suitable for sensitive skin?
Yes, start with Crystal Retinal 1 and gradually build up.
When will I see results?
Many users see visible changes within 10 days.
Do I need sunscreen?
Yes, always pair vitamin A with daily SPF.