Is Henna Hair Dye a Bad Idea? Here’s What the Experts Have to Say. Medically reviewed by Cynthia Cobb, DNP, APRN, WHNP-BC, FAANP — Written by Nandita Godbole on September 30, 2021.

Hair Dye Allergy Medically reviewed by Cynthia Cobb, DNP, APRN, WHNP-BC, FAANP Hair coloring products contain many ingredients that can irritate the skin and cause allergic reactions.

We tested the best at-home hair color and dye products for pro-level results By . Kendall Cornish. Updated Feb. 15, 2024, 2:10 p.m. ET. New York Post ...