Disclosed are topical compositions having improved substantivity such as improved water-proofing (e.g., resistance to perspiration) and rub-off resistance useful for protecting the skin from the harmful effects of ultraviolet irradiation, such as sunburn and sun-induced premature aging of the skin.
A cosmetic sunscreen composition is described that includes an emulsion formed from water, an emollient oil and an organic sunscreen agent capable of absorbing ultraviolet radiation within the range of 290 to 400 nm. Further included in the sunscreen composition is a microfluidized medium formulated and microfluidized separately and prior to blending with the other aforementioned components. This medium includes water, a phospholipid, and an organic sunscreen agent identical to that in the emulsion. The combination of identical sunscreen agents in different environments provides an overall increase in SPF for the overall sunscreen composition.
Process for the aesthetic treatment of persons who exhibit a dual character between two parts of their skin comprising a greasy area and a dry area, which comprises the application to the skin of a such person a cosmetic composition comprising an effective quantity of an emollient substance which also exhibits a lipase-inhibiting activity. The substance is selected from the group consisting of Limnanthes alba oil, Jessenia bataua oil, the unsaponifiable fraction of soya bean oil and shea butter. The effective quantity is, by weight percent of the entire composition:
A sunscreen cosmetic composition is provided which is a water and emollient oil emulsion containing an inorganic sunscreen agent such as titanium dioxide with a relatively large particle size ranging from about 0.1 to 20 micron and an organic sunscreen agent. High levels of sunscreen activity are achievable without any significant adverse effect on emulsion aesthetics.
Cosmetic compositions containing terpenoids along with a 4-substituted resorcinol derivative exhibit improved storage stability and oxidative stability.
Cosmetic compositions containing organic sunscreens along with a 4-substituted resorcinol derivatives of general formula I exhibit improved storage stability and oxidative stability: ##STR1## where each R.sub.1 and R.sub.2, independently, represents a hydrogen atom, --CO--R (acyl group), --COO--R CONHR; where R represents saturated or unsaturated, linear, branched or cyclic C.sub.1 -C.sub.18 hydrocarbon groups; and R.sub.3 represents (1) an alkyl group, having from 1 to 18 carbon atoms, preferably having from 2 to 12 carbon atoms, with or without substitution of one or more hydrogen atoms of a linear alkyl group with a methyl or ethyl group; e.g., R.sub.3 constitutes linear or branched chain alkyls, or (2) a group of the general formula formula (II) ##STR2## Where X is preferably H, n is 0 to 3 and the dashed lines represents an optional double bond.