Harm Caused by Alkaline Substances on Hair and Scalp

May 2026 in “ International Journal of Health Management Review ”

Paula Breder

substâncias alcalinas alto pH alisamento químico intumescimento das fibras capilares degradação proteica escamas cuticulares hidróxidos metálicos lantionização resistência do cabelo manto ácido do couro cabeludo dermatites queimaduras químicas alopecias cicatriciais chemical hair straightening metal hydroxides hair fiber swelling cuticle scales acid mantle of the scalp scarring alopecia

TLDR Alkaline substances can severely damage hair and scalp health.

Este estudo revisou os danos causados por substâncias alcalinas de alto pH no cabelo, destacando que o uso de agentes químicos para alisamento pode causar intumescimento das fibras capilares e degradação proteica devido à abertura das escamas cuticulares. O uso de hidróxidos metálicos pode levar à lantionização, enfraquecendo irreversivelmente a resistência do cabelo. Além disso, o pH elevado neutraliza o manto ácido do couro cabeludo, aumentando o risco de dermatites, queimaduras químicas e alopecias cicatriciais irreversíveis. A conclusão enfatiza a necessidade de priorizar a saúde capilar e educar sobre os riscos associados a esses procedimentos.

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