| 摘要 |
<p>PURPOSE: To obtain an emulsion having excellent effects on treatment of the skin in cosmetic and dermatological fields by contg. retinol, an oil phase, water phase and an agent for emulsifying the aq. phase in the oil phase, where the oil phase contains at least one org. solvent for dissolving retinol, and the aq. phase is basic. CONSTITUTION: In a water-in-oil emulsion contg. retinol, an oil phase, an aq. phase and an agent for emulsifying the aq. phase in the oil phase, the oil phase contains at least one org. solvent for dissolving retinol which is liq. at room temp., and the pH of the aq. phase is basic so as to stabilize the retinol for at least two months. The emulsion 6 is prepared under an inactive atmosphere without oxygen, and under light causing no photochemical reaction. The accommodation apparatus 2 of products is equipped with a distribution apparatus 8 so as not to bring the products in contact with external air, has a wall having impermeability to gases and visible-ultraviolet light, the surface of the wall in contact with the products is made of nonmetal and the accommodation apparatus is equipped with an oxygen capturing apparatus.</p> |
