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.

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 ...

Indigo powder, derived from the natural indigo pigment extracted from the indigo plant, is renowned for its use in dyeing fabrics and has gained considerable popularity in the hair dye industry.

A chemical compound used in many permanent hair dyes has been named Allergen of the Year for 2025 by the American Contact Dermatitis Society (ACDS). Toluene-2,5-diamine sulfate (PTDS) is an ...

Mehendi, commonly known as henna, has been utilized for centuries as a traditional colourant, natural hair dye and ...