Bleach is a popular ingredient used to lighten hair, but it's not the only option. Here, three celebrity colorists explain ...
Background: Finding alternative hair dyes for individuals allergic to para-phenylenediamine (PPD) has been difficult. Newer permanent and demipermanent hair dyes that have replaced PPD with para ...
The best time to apply it is before going to bed. In the morning it has to be rubbed off with a hard brush, for it sticks like mortar, and is a disagreeable, although an effectual dye. The hair is ...
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