Indigo powder is a natural hair dye with a long history of use, but it can cause allergic reactions in sensitive individuals. Those with dry, flaky scalps should avoid it, as it may worsen their ...

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 ...

Hair dyes can be an exciting way to refresh your look, but understanding their risks ensures you make informed beauty choices ...

Frequent hair colouring can cause significant hair damage, scalp irritation, and hair thinning due to harsh chemicals. It is linked to long-term health issues and environmental concerns.

but some people may be sensitive to dyes such as carmine, Red 40, or Yellow 5 and develop an intolerance or allergic reaction to them. An allergic reaction to food dye can be mild or severe.

However, the possibility that she suffered a rare allergic reaction to a chemical in the dye will be investigated in a post-mortem examination. Tabatha’s grandfather John Bell, 59, said she had no ...

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 ...

Using mehendi frequently for hair coloring can lead to excessive dryness, hair thinning, allergic reactions, and difficulty switching to synthetic dye ...