eCosmetics is an authorized retailer of SK-II SK-II's LXP Ultimate Revival Serum firms the skin with a boost of hydration to minimize the appearance of fine lines and wrinkles. It features PITERAu2014an SK-II exclusive bio-ingredient derived from yeast that contains more than 50 micro-nutrients like vitamins, minerals, amino acids, and organic acidsu2014to hydrate the face and visibly reverse skin damage and aging. This ultra-rich evens the skin tone while plumping the skin, creating a smooth, youthful, and radiant complexion. Use this serum after the essence but before the eye cream, or check out SK-II's entire LXP Ultimate line.