cosmetic or dermatological compositions containing at least one anti - aging active agent having an irritant effect , a cosmetically or dermatologically acceptable medium , and in addition , as an agent mollifying the irritant effect , a ceramide of the following formula : ## str1 ## wherein a is ## str2 ## r 1 is a saturated or unsaturated , linear or branched c 10 to c 26 alkyl group ; r 2 is a saturated or unsaturated , linear or branched c 12 to c 32 alkyl group ; r 3 is h or -- co -- choh -- r 2 ; and n is 0 or 1 , are effective for combating the aging of skin and at the same time exhibit a reduced tendency to cause smarting , itching , or a sensation of tightness when applied to the skin .