Cosmetic and dermatological formulations containing at least one
UV-sensitive active ingredient have increased UV protection and have the
active ingredient stabilized against decomposition through addition of at
least one dialkyl naphthalate of the structural formula ##STR00001##
wherein R.sup.1 and R.sup.2 are selected independently of one another
from the group consisting of branched and unbranched alkyl groups having
between 6 and 24 carbon atoms, and at least one emulsifier, selected from
the group consisting of phosphate and sulphate emulsifiers.