| 摘要 |
PURPOSE:A rinse that is made by adding glyoxal and anionic and/or nonionic surfactants to a solution with buffering action and is used in the intermediate step in the two-bath type cold permanent wave setting to inactivate the unreacted thioglycolic acid. CONSTITUTION:The titled rinse is obtained by adding glyoxal and surfactants to a buffer solution of 5-6pH so that their concentrations become 1.5-3 and 0.001-0.1% respectively. As the buffer solution, is cited an aqueous solution containing an organic acid of less than 5 pK1 such as acetic acid or citric acid and its alkali metal salt or alkali metal hydroxide, while sodium laurylsulfate or polyoxyethylene nonylphenyl ether is cited as a surface active agent. The resultant rinse neutralizes the alkali, simultaneously inactivates the remaining thioglycolic acid to prevent the second agent from lowering its effect and the hair from being damaged. |
