Abstract: Topically applicable dermatological/cosmetic compositions suited for ungual/peri-ungual administration for the treatment of a variety of pathologies, including fungal pathologies, such as onychomycosis, contain (a) at least one biologically active agent (e.g., antifungal) and (b) at least two of the pro-penetrating agents selected from the group consisting of urea, an organic acid and an ethoxydiglycol, the at least two-pro-penetrating agents respectively being present in effective amounts as to synergistically improve the ungual/peri-ungual bioavailability of the at least one biologically active agent.

Abstract: Cosmetic/pharmaceutical compositions comprising adapalene dissolved in an aqueous medium with cyclodextrin and/or derivatives thereof, notably as inclusion complexes therewith, are useful as cosmetics and for the therapeutic treatment, e.g., of acne.

Abstract: Solubilized retinoids within cosmetic/pharmaceutical compositions, e.g., aqueous gels or oil-in-water emulsions, are chemically stabilized by introducing therein an amount of at least one base effective to salify such retinoids; the resultant compositions are useful in cosmetics and dermatology, e.g., for treating acne vulgaris or psoriasis.

Abstract: Topically applicable dermatological/cosmetic compositions suited for ungual/peri-ungual administration for the treatment of a variety of pathologies, including fungal pathologies, such as onychomycosis, contain (a) at least one biologically active agent (e.g., antifungal) and (b) at least two of the pro-penetrating agents selected from the group consisting of urea, an organic acid and an ethoxydiglycol, the at least two-pro-penetrating agents respectively being present in effective amounts as to synergistically improve the ungual/peri-ungual bioavailability of the at least one biologically active agent.

Abstract: Topically applicable cosmetic/dermatological compositions well suited for the therapeutic treatment or care of human skin, nails, hair and/or of the scalp, in particular for treating and/or preventing xerosis, ichthyosis, actinic keratosis and/or photoinduced cutaneous aging, comprise a water-in-oil emulsion containing (a) at least 10% by weight of at least one hydroxy acid, (b) an effective emulsifying amount of at least one polyoxyalkylenated silicone, and (c) an effective coemulsifying amount of at least one polyol alkyl ester, polyol alkyl ether or oxyalkylenated alkyl ether, with the proviso that the subject compositions are devoid of any C.sub.1 -C.sub.4 alkanol.

Abstract: Topically applicable cosmetic/dermatological compositions well suited for the therapeutic treatment or care of human skin, nails, hair and/or of the scalp, in particular for treating and/or preventing xerosis, ichthyosis, actinic keratosis and/or photoinduced cutaneous aging, comprise a water-in-oil emulsion containing (a) at least 10% by weight of at least one hydroxy acid, (b) an effective emulsifying amount of at least one polyoxyalkylenated silicone, and (c) an effective coemulsifying amount of at least one polyol alkyl ester, polyol alkyl ether or oxyalkylenated alkyl ether, with the proviso that the subject compositions are devoid of any C.sub.1 -C.sub.4 alkanol.