Hair colouring has long been associated with transformation, whether through brighter blondes, deeper burgundy shades or seamless grey coverage. However, experts say the chemical processes behind many ...
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Hair colour side effects: Expert reveals how hydrogen peroxide damages hair over time
Hydrogen peroxide is a common ingredient in hair dyes, but experts warn it may weaken hair fibres over time, causing dryness, breakage, scalp sensitivity, and long-term damage.
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