Product Overview - Medik8 Crystal Retinal | Next-Generation Vitamin A Night Serum. Discover Medik8 Crystal Retinal, a next-generation vitamin A night serum that targets the visible signs of ageing. This iconic overnight serum features Retinaldehyde (Retinal), a form of vitamin A that works up to 11 times faster than traditional retinol, helping to visibly smooth the look of wrinkles, brighten the appearance of dark spots and support a firmer-looking complexion, with a low risk of irritation.. Exclusively formulated with Medik8's patented stability system, Crystal Retinal utilises crystal encapsulation technology and a carrot seed oil complex to help maintain potency from the first drop to the last. Available in six progressive strengths (0.01% - 0.24% retinaldehyde), this serum offers a personalised approach to vitamin A skincare. Enriched with Hyaluronic Acid, Vitamin E, and Glycerin, the lightweight mousse-like texture provides essential hydration whilst supporting professional-grade results. Suitable for all skin types depending on strength selection, from sensitive skin beginners to experienced vitamin A users.. Choose Your Strength: The Crystal Retinal Ladder System. Crystal Retinal® offers a unique progressive ladder with six strengths, allowing you to begin at the appropriate level and advance as your skin builds tolerance. Each strength contains the same expertly-formulated base with varying concentrations of stabilised retinaldehyde.. Crystal Retinal 1 (0.01% Retinaldehyde). Best For: Very sensitive skin types or those with concerns about vitamin A tolerance. The gentlest introduction to retinaldehyde, providing anti-ageing benefits with maximum comfort.. Crystal Retinal 3 (0.03% Retinaldehyde). Best For: Vitamin A beginners and the most common starting point for most users. Suitable for those new to retinaldehyde who don't have particular skin sensitivity concerns.. Crystal Retinal 6 (0.06% Retinaldehyde). Best For: Regular vitamin A users stepping up from Crystal Retinal 3, or those who have previously used Medik8 Intelligent Retinol. Delivers enhanced visible results whilst maintaining skin comfort.. Crystal Retinal 10 (0.1% Retinaldehyde). Best For: Advanced vitamin A users stepping up from Crystal Retinal 6. Provides powerful anti-ageing results for those with established retinoid tolerance.. Crystal Retinal 20 (0.2% Retinaldehyde). Best For: Experienced vitamin A users stepping up from Crystal Retinal 10. High-strength formulation for those seeking maximum visible results with established vitamin A experience.. Crystal Retinal 24 (0.24% Retinaldehyde). Best For: Expert vitamin A users stepping up from Crystal Retinal 20. The highest concentration available, designed for those with extensive retinoid experience seeking the most powerful anti-ageing results.. Expert Guidance: Our skincare specialists recommend completing at least one full 30ml tube of your current strength before advancing to the next level. When progressing up the ladder after completing a tube, no phase-in period is required. However, if you're starting Crystal Retinal for the first time, always follow the gradual phase-in protocol regardless of which strength you choose. Speak to our experts for personalised strength recommendations based on your skin concerns and vitamin A history.. Key Benefits at a Glance:. Immediate Benefits:. Rapid Cell Renewal: Retinaldehyde requires only one conversion to retinoic acid, which is why it works up to 11 times faster than classic retinol. Suits Blemish-Prone Skin: Unlike other vitamin A forms, retinaldehyde is also associated with helping keep blemish-prone skin looking clearer. Enhanced Hydration: Hyaluronic acid and glycerin work synergistically to attract and retain moisture, leaving skin plump and supple. Gentle Yet Powerful: Crystal encapsulation technology helps provide a gradual release throughout the night, helping to minimise irritation. Immediate Smoothness: The nourishing serum-cream texture provides instant skin comfort with a satin, blurred finish. Long-Term Benefits:. With consistent use, Crystal Retinal® supports visible improvements in the skin's appearance. In Medik8's independent studies, participants saw a reduction in the appearance of wrinkles and hyperpigmentation and an improvement in skin firmness over 12 weeks. The progressive ladder system lets your skin build tolerance whilst steadily building visible results.. Beyond the surface, retinaldehyde is associated with supporting the skin's natural collagen, helping to address the look of lost elasticity and firmness. The formula works overnight to support skin cell turnover, helping reveal fresher, more radiant-looking skin whilst you sleep. The combination of vitamin E and stabilised vitamin C derivatives helps provide antioxidant protection against the environmental damage associated with premature ageing.. How will it feel on my Skin?:. Crystal Retinal® features a distinctive mousse-like lotion texture that transforms into a luxurious cream-like serum upon application. The lightweight formula effortlessly melts into skin, absorbing within approximately 30 seconds to leave a comfortable satin finish with no greasy residue. Unlike many potent vitamin A products, this formulation feels nourishing and gentle on application, with skin feeling soft, smooth, and comforted. The formula is expertly balanced to provide essential moisture without heaviness, making it suitable even for those who typically find retinoids drying. Our experts recommend following with a moisturiser to maximise comfort and results.. Who is it Suitable For?. Individuals seeking professional-grade anti-ageing skincare with a low risk of irritation. Those concerned with fine lines, wrinkles, and loss of skin firmness. Anyone experiencing uneven skin tone, dark spots, or hyperpigmentation. Blemish-prone skin types looking for a vitamin A serum. Vitamin A beginners (Crystal Retinal 1 or 3) through to expert users (Crystal Retinal 20 or 24). Sensitive skin types when starting with the appropriate strength (Crystal Retinal 1). All skin types including dry, normal, combination, and oily complexions. Adults seeking professional-grade skincare. Why choose Medik8 Crystal Retinal®?. Crystal Retinal® is a breakthrough in vitamin A skincare, offering the stability and performance Medik8 is known for. The unique progressive ladder system removes the guesswork from vitamin A, allowing you to advance through strengths as your skin builds tolerance. Our experts recommend this award-winning formula for its balance of power and gentleness, with 100% of participants in Medik8's study confirming the product felt gentle on their skin.