
Colouring your hair can have several possible risks, especially if done frequently or with strong chemicals. Hair dyes may cause scalp irritation, itching, or allergic reactions in some people due to ingredients like ammonia or paraphenylenediamine (PPD). Repeated use can make hair dry, weak, and prone to breakage or split ends. It may also lead to hair thinning over time. In rare cases, strong chemical exposure can affect eye or skin health during application. Some studies suggest long-term exposure to harsh dyes may carry health concerns, though evidence is limited. Using natural or ammonia-free dyes and doing patch tests can reduce risks.
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