The cosmetic or dermatological formulations of the invention include:
(a) at least one oxidation-sensitive or UV-sensitive active ingredient,
(b) at least one dialkyl naphthalate which is distinguished by the
structural formula ##STR00001## in which R.sup.1 and R.sup.2,
independently of one another, are chosen from the group of branched and
unbranched alkyl groups having 6 to 24 carbon atoms, and (c) at least
one wax and/or one oil thickener. The present invention also includes
methods of using the cosmetic or dermatological formulations.