Washington Cosmetology License Practice Exam

A conditioning filler's purpose is to equalize the porosity of the hair and fill in any holes or gaps in the hair's cuticle. This helps to create an even and smooth canvas for the hair color to adhere to. Option A, to permanently alter hair color, is incorrect because conditioning fillers do not permanently alter hair color. They are used as a pre-treatment before applying hair color. Option C, to achieve pale and delicate colors, is incorrect because while conditioning fillers can help to even out the porosity of the hair, they are not used specifically for achieving pale or delicate colors. Option D, to decolorize hair, is incorrect because conditioning fillers do not have any decolorizing properties. They are used for filling and equalizing porosity, not for removing color from the hair.