Melt ingredients in a at 75'C. In b, carefully dissolve sodium hydroxide by adding to water and stirring. Slowly add with rapid stirring c, (pre-heated to 75'C) to a. When temperature of mass has dropped to 60'C, slowly add b. Continue stirring until temperature has dropped to 45'C, at which point add alkaline-stable perfume. Remix next day and package. NOTE: This product is used only in conjunction with a protective cream comprising essentially petrolatum. The protective cream is used on the hair and scalp line. Suitable caution statements should be incorporated in the label.