Chemical Leukoderma to Hair Dye in a Singaporean Indian – A Rare, Adverse Cosmetic Outcome in Relation to a Ubiquitous Cosmetic Product

Abstract

A 54 year old Indian lady developed progressive hypopigmented lesions of her scalp after using an over-the-counter hair dye. On examination, multiple hypopigmented areas with irregular edges are observed over the scalp. Some of these hypopigmented areas are surrounded by a narrow rim of hyperpigmentation.