Medik8 Crystal Retinal 24

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.