Relaxing And Straightening Of Afro-Ethnic Hair: Historical Overview

March 2007 in “ Journal of cosmetic dermatology ”

Tania Cristina de Sá Dias, André Rolim Baby, Telma Mary Kaneko, Maria Valéria Robles Velasco

Afro-ethnic hair hair relaxing hair straightening chemical straightening thermal straightening high pH cosmetic emulsions sebum distribution dryness chemical hair relaxers hair relaxers

TLDR Afro-ethnic hair can be straightened using chemical and heat methods.

The document provided a historical overview of the methods used to relax or straighten Afro-ethnic hair, highlighting the unique characteristics of this hair type, such as variations in diameter, ellipsoidal threads, and irregular sebum distribution leading to dryness. It discussed both chemical and thermal methods for straightening, with a focus on the chemical process that irreversibly straightens excessively curly hair using high pH cosmetic emulsions. The review traced the evolution of product categories used for hair straightening over time.

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research Mechanism of Hair Straightening

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Relaxing And Straightening Of Afro-Ethnic Hair: Historical Overview

Research cited in this study

research Mechanism of Hair Straightening

research Cuticle Damage and the Tensile Properties of Human Hair

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