Scientists uncover secret of curly hair

Recent studies reveal that the difference in hair type between straight and curly hair is due to the shape of hair follicles inherited genetically. Straight follicles produce straight hair, while curved ones produce curly or wavy hair. This results in an uneven distribution of keratin protein, making curly hair more twisted and tousled. It is also believed that curly hair evolved as a natural method to protect the scalp from sunlight, by reducing heat absorption and helping keep the head cool in hot environments.

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