Unlike chemical dyes, which can strip hair of its natural oils, henna is an organic alternative free from harsh chemicals, making it safer. Henna cream combines the colouring properties of ...

ACDS tapped toluene-2,5-diamine sulfate for its dual nature as both an allergen and an alternative to other compounds.

the safest route for correcting a dye job is to call in the professionals and visit a colour specialist in a salon. You need to be very honest about what products you have used on your hair.

These products typically come in liquid form ... which is why Connor always recommends visiting a salon to change up your hair color. However, taking everything into consideration, it’s ...

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 ...

Occupational studies stretching back decades have found an increased risk of bladder cancer among hairdressers.