Delivering gentle fine line-reducing benefits, the Medik8 Crystal Retinal 1 Serum is an advanced retinaldehyde formula that protects from the noticeable signs of ageing. Powered by 0.01% stabilised retinal, the treatment is suitable for beginners and those with sensitive skin thanks to a blend of nourishing actives and time-release encapsulation technology. The fast-acting form of vitamin A is known for its skin-smoothing effect and potent renewing properties. Paired with hyaluronic acid, glycerin and vitamin E, the serum diminishes the look of uneven texture, dullness and discolouration to encourage the illusion of enhanced elasticity and bounce. Recommended by dermatologists, the innovative Crystal Retinal collection features a unique ladder of five progressive strengths (0.01 - 0.2%) to ensure optimal results at every level of your retinaldehyde journey. 97% felt their skin had a more youthful appearance* 20% reduction in the appearance of wrinkles* 20% reduction in visible hyperpigmentation* 11% increase in skin firmness* 100% felt Crystal Retinal was gentle on their skin* *Proven via independent clinical study on one tube of Crystal Retinal 6. Tested on 33 participants over 12 weeks.