Permanent Dye: They allow for significant hair color change, cover 70%-100% of gray hair, and last for 4-5 weeks, during which time the natural shade begins to show from the scalp.
Temporary Dye: They don't change the hair color, they simply allow for a subtle change in shade, lasting less than 4 weeks.
Cruelty-free: No animal testing has been conducted at any stage of the product development.
Paraben-free : Does not contain preservatives that are used to protect the product from microbes and spoilage. Usually preferred by people who want a "milder" formula or avoid certain preservatives.
Vegan: Does not contain ingredients of animal origin or animal-derived products.
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