Product Details This Oskia advanced regenerating, firming sleep serum contains five Growth Factors (including EGF), Shiitake and Turkey Tail Mushrooms, Vitamins A, B3, B9, C, E and Pro-Vitamin D3, plus Melatonin, which works with your circadian rhythm to support regeneration, repair, and optimise skin health. Boosts elasticity by 36% and skin firmness by 24%. Wake up with smoother, firmer, brighter skin.; Voted Best Serum by Women's Health 2025 Best for Suitable for all skin types and tones, ideal for those over 30+ concerned with skin firmness and tone, texture or skin damage. Ideal for peri, menopausal or post-menopausal skin. Key benefits:; 36% Increase in elasticity 24% increase in firmness 24% decrease in winkle depth 100% felt their skin was more hydrated 100% felt their skin looked calmer 95% felt their skin was firmer 90% felt their skin looked more rested 90% felt their skin looked more energised *Independent clinical trials 2024. 20 subjects of mixed ethnicity and skin tone (