Hair growth external preparation containing minoxidil and pantotenyl ethyl ether and stabilization of the pantotenyl ethyl ether and method for inhibiting crystallization of minoxidil, etc.

摘要

Problem to be solved: to provide a hair growth external use agent for suppressing the change in time of pantotenyl ethyl ether and suppression of crystallization of a minoxidil, etc., and to stabilize the pantoteethyl ethyl ether in such a hair growth external use agent.In the hair growth external use agent which uses minoxidil, etc. as an active ingredient,The purpose of this study is to clarify the relationship between the suppression of the time course of pantotenyl ethyl ether and the suppression of the crystallization of minoxidil.UnexpectedlyMinoxidilHair growth agent containing pantotenyl ethyl etherGlycerin1Contains polyvinyl alcohol, such asBy adjusting the pH value within the range of 6.0 to 6.5 using lactic acid as a pH regulatorIt is found that the above problem can be solvedThe present invention has been completed.No selection