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What causes allergies to hair colourants?

T-Cells check everything entering our bodies for potential danger. When T-Cell receptors fit with a potentially dangerous substance, they activate the body’s immune system called “the induction of an immune response”. But sometimes T-Cells get it wrong. A substance fits, is recognised as dangerous and activates an immune response…although it was harmless. This is what happens when allergies develop in previously non-allergic people.

On rare occasions hair colour allergies develop like this. ME+ is the first hair dye molecule in 100 years in the permanent hair colour category to pair reduced risk of developing allergy while maintaining uncompromised colour performance, with a spectrum of high performance colours.