Zhaoming says to monitor how often you dye your hair carefully. “My advice is not to dye your hair more than once every three months, or no more than four times a year,” she says. “Reducing the ...

Here’s what the research suggests about the link between hair dye and cancer. Credit...Joyce Lee for The New York Times Supported by By Rachel Rabkin Peachman Q. I color my hair regularly, but I’ve ...

Demi-permanent hair color is ammonia-free, slightly alters hair tone, and lasts between five to 12 washes. Unlike ...

There are so many shades to consider when dyeing your hair at home. Looking for a hue that's cool or warm in tone? The best drugstore hair dyes have options for both. Choosing the right red hair color ...

Dec. 16, 2025 — If you search for hair dye on social media, you’ll mostly see inspo photos of women with brightly colored locks. But you’ll also find clips warning you that dying your hair isn’t so ...

Hair dyes can weaken and damage hair, making it look unhealthy. However, treatments such as conditioners and specially formulated shampoos may help repair hair damage from hair dye. Dyeing the hair ...

Current estimates suggest that 50-80% of women and 10% of men 40 years of age and over in the United States and Europe use permanent hair dye products. The aromatic amine p-phenylenediamine (PPD) is ...