What it is: A serum with golden vitamin C and polyglutamic acid for brighter skin with reduced signs of dark spots, fine lines and wrinkles.Who it's for: Ideal for those with dry, normal, combination and oily skin types.What it does: This serum fuses Charlotte's decades of experience working with all skin types along with the power of cutting-edge ingredients and the clinical expertise of leading dermatologists. Potent and ultra-hydrating, this science-powered formula is clinically proven to help plump and hydrate skin for flawless makeup application. Polyglutamic acid offers four times more hydrating power than hyaluronic acid, with large molecules that allow it to form a thin moisture-loss-preventing film on the skin's surface. While improving the appearance of dryness, it acts as a plumper-looking skin filter to help reduce the appearance of fine lines.Research results:In a clinical study of 31 people over eight weeks of use:- Participants noted a significant increase in hydration by 172% after one hour- Participants noted skin water loss was reduced by 43% after one hour- Participants noted skin was moisturized for up to 24 hours- Participants noted skin appeared more elastic by 122%- Participants noted skin appeared firmer by 49%- Participants noted a visible reduction in the appearance of wrinkles by 34%- Participants noted pores were reduced by 39%How to use: Use daily and nightly. Massage a few drops onto clean skin morning and evening before your moisturizer. 1 oz. Paraben-free; sulfate-free; phthalate-free; silicone-free Leaping Bunny-certified for a commitment to cruelty-free testing Made in the UK