The vast majority of reactions to hair-dye products are caused by PPD. [4–6] In past years, PPD was used in permanent hair dyes but not in semipermanent dyes. More recently, PPD has been used in ...

It's normal for kids to want to experiment with their hair color...but how early is too early to let kids dye their hair? We ...

Common permanent hair dyes contain ingredients that may irritate the skin, leading to allergic responses, damage to the scalp, and more serious conditions like dermatitis and hair loss.

Permanent hair colour doesn ... to make sure you don’t have an allergic reaction. As mentioned, a majority of synthetic hair dyes do contain chemicals – and it's super difficult to find ...

Women who regularly use permanent hair dye may be putting themselves at increased risk of bladder cancer, new research findings suggest. The study is the first to show that how often you use hair ...

These semi-permanent hair dyes are perfect for switching up your ... types and has been proven to significantly reduce allergic reactions. The non-permanent colour gradually fades after 28 washes ...

The main concern related to oxidative permanent colouring is the risk of irritation and allergic reactions. Hair dye residues, when improperly disposed of, can contaminate soil and water resources ...

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 ...