Advanced Night Serum. Light super-fast absorbing vitamin A serum that rejuvenates skin at its most optimal time – at night. Retinol has been shown in several clinical trials to combat common skin-ageing concerns such as facial wrinkles, lines, folds and a loss of firmness by stimulating collagen and hyaluronic acid production. Retinol has also been proven to improve skin clarity and texture, promote anti-pigmentation plus demonstrate a