philosophy Turbo Booster Vitamin C Powder 7.1gphilosophy turbo booster powder c 7. 1g all skin types turbo booster c is a 99. 8% high potency topical vitamin c powder. used alone or mixed with your favourite water based serum, moisturiser or spf, our vitamin c powder helps protect skin against environmental attack and brighten skin tone. features & benefits 99. 8% stable topical vitamin c powder helps protect skin against environmental attack helps brighten and even skin tone