When used as a serum, apply directly to the skin twice daily after cleansing. When used as a primer, apply over DermaShield SPF before finishing with DermaFix BB Cream. When used as a skin perfector, wait a few minutes after applying your DermaFix BB Cream, then apply a over the whole face or selected areas for mattifying and perfecting. For a velvet-lip finish, apply your favourite lipstick, blot, then apply a tiny amount over the lip area.