The cosmetic or non-therapeutic use of an oral composition for reinforcing an individual's skin tolerance to topical administration of a retinoid compound, the oral composition having at least one carotenoid, at least one phytoestrogen and vitamin C. A cosmetic or non-therapeutic process for increasing an individual's skin tolerance to topical administration of a retinoid compound, having at least one step of oral administration to the individual of an oral composition having at least one carotenoid, at least one phytoestrogen and vitamin C. A set for simultaneous, separate or sequential administration, the set having a first cosmetic composition for topical application having, in a physiologically acceptable medium, at least one effective amount of a retinoid compound, and a second composition for oral administration, for reinforcing the skin tolerance of the individual treated with the first composition, the second composition having at least one carotenoid, at least one phytoestrogen and vitamin C.
