A highly effective concentrate with 15% Vitamin C, designed to firm, brighten skin and reduce signs of aging caused by sun exposure. Advantages: | Designed to be mixed by you before first use to maximize the potency of the ingredients and keep the formula fresh Reveals a brighter, firmer and more even complexion Significantly reduces the appearance of signs of aging and photodamage Formulated with a skin-friendly pH of 2.5. | 100% free from essential oils, silicones, fragrances/dyes and solvent alcohols. Dermatologist tested.