Description
You should be comfortably using Crystal Retinal 20 every night for at least 3 months, or have completed 2 full tubes, before progressing to Crystal Retinal 24.
Medik8 Crystal Retinal™ 24 is the brand’s highest-grade, ultra-potent retinaldehyde serum designed exclusively for very advanced vitamin A users. Featuring an exceptional 0.24% encapsulated retinaldehyde, this powerful formula converts into retinoic acid up to 11 times faster than standard retinol, targeting visible signs of ageing with clinical precision.
This next-generation serum supercharges collagen production to visibly reduce fine lines, wrinkles and uneven texture, while supporting clearer skin thanks to retinal’s natural antibacterial properties. Despite its strength, Medik8’s innovative crystal-encapsulation time-release technology delivers retinal steadily throughout the night to minimise irritation.
A nourishing blend of hyaluronic acid, glycerin and vitamin E provides deep hydration and barrier support, keeping skin smooth, supple and comfortable as it adapts to the elevated potency.
In just four weeks, users can expect a firmer, brighter, smoother and more youthful-looking complexion.
Benefits
- Ultra-high 0.24% encapsulated retinaldehyde for advanced vitamin A users
- Works up to 11x faster than retinol to firm and smooth the skin
- Refines uneven texture and helps reduce the appearance of lines and wrinkles
- Natural antibacterial action helps clarify blemish-prone skin
- Time-release delivery ensures maximum results with minimal irritation
- Hydrating complex restores comfort and supports barrier repair
Key Ingredients
- 0.24% Encapsulated Retinaldehyde – The strongest Crystal Retinal level for rapid, clinically proven anti-ageing results.
- Hyaluronic Acid – Attracts and retains moisture for plump, hydrated skin.
- Vitamin E – Provides antioxidant protection and enhances stability.
- Glycerin – Strengthens the skin barrier and boosts long-lasting hydration.






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