The invention relates to compositions containing recycling/transfer proteins for structurally/functionally modified lipids, a lipid depot of structurally non-modified lipids, and non-transferable active ingredients. Such compositions can be used for the engineering of biomembranes, e.g. by external topical application, especially to the skin/mucous membranes. Structurally or functionally, especially oxidatively modified, lipids are removed from the structures containing the same, such as lipid aggregates of the skin, are externally regenerated in a depot, and preferably introduced back into the structures. The invention also relates to the recycling of modified lipids of biomembranes. The inventive compositions are self-regulative and can be especially applied in a cosmetic, cosmetic balneological or dermatological/pharmaceutical manner.