NEXT GENERATION VITAMIN A Retinal provides 11x faster anti-ageing results compared to retinol , PATENTED CRYSTAL ENCAPSULATION Stabilises the retinal and releases it slowly into the skin overnight for minimal-irritation Medik8 Crystal Retinal 10 30ml - Stable Retinal Night SerumCrystal Retinal takes vitamin A anti-ageing serums to new heights. Featuring retinaldehyde, a next-generation form of vitamin A, not to be confused with the classic form: 'retinol'. In comparison, retinal is one step closer to becoming biologically active, and as a result, is clinically proven to show visible anti-ageing results 11x faster, yet without the irritation.Innovation is core to Crystal Retinal, stabilising the notoriously difficult retinal using a patented crystal encapsulation and a patent pending carrot seed complex. The retinal is then released gradually into the skin overnight, for minimal irritation.The night time serum visibly minimises signs of premature ageing; plumping and resurfacing the complexion for a smoother skin surface and youthful glow. As well as targeting the signs of ageing, Crystal Retinal also has the ability to help reduce blemish-causing bacteria, to visibly improve the clarity of the skin.Medik8 offers progressive concentrations of Crystal Retinal products which form the Medik8 Crystal Retinal Ladder. Crystal Retinal 10, containing 0.1% retinaldehyde, is recommended for those who have comfortably used Crystal Retinal 6.Medik8 recommends a simple, highly effective anti-ageing strategy of using vitamin C and sunscreen in the morning and vitamin A at night. This strategy is called: CSA. Independent user trial carried out over 8 weeks using Crystal Retinal 6. Individual results may vary. J. Fluhr, Tolerance profile of retinol, retinaldehyde and retinoic acid under maximized and long-term clinical conditions, Dermatology, 1999,199(Suppl 1), pp 57-60. G Siegenthaler et al, Retinol and retinal metabolism. Relationship to the state of differentiation of cultured human keratinocytes, Biochem J, 1990, 268(2), pp 371–378 Pechere M et al, The antibacterial activity of topical retinoids: the case of retinaldehyde, Dermatology, 2002, 205(2), 153-8.