Advice: Do a skin patch test 24 hours before first use. These are the safest options. Here, the dye is painted on the length of the strand of hair, but not the scalp. It is not absorbed by the skin.

The brand plans to target more consumer hair concerns in 2025, and promises its products will always be color-safe, vegan, cruelty-free, and free of sulfates, parabens, phthalates, gluten and dyes.