Salerm Color Reverse Case 14.1 oz Kit - Removes hair dyes. The Salerm Color Reverse Case is a hair dye remover that comes in a 14.1 oz case. It is designed to remove the buildup of artificial hair color, leaving your hair ready for re-coloring. The kit contains two products: a color reducer and a color fixer, both formulated with Salerm's signature care and conditioning technology. It is suitable for use on natural and dyed hair, and can be used to remove permanent, semi-permanent, and temporary hair dyes.