TLDR Hair coloring, waving, and ironing cause more hair damage than not using these treatments.
This study investigated the microscopic changes in hair among 154 Iranian women who used hair coloring, waving, or ironing compared to those who did not. The participants were divided into four groups: controls, dyed-hair, waved-hair, and ironed-hair. The study found that abnormal hair findings were significantly more frequent in the dyed (53.1%), waved (45.7%), and ironed (54.3%) groups compared to the control group (17.1%). Specific abnormalities included trichorrhexis, kinking, pseudo pili-annulati, trichonodosis, tracheoschises, and trichoptilosis, with varying prevalence across the groups. The results indicated that these cosmetic practices could induce hair abnormalities.
34 citations
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January 2011 in “Annals of dermatology/Annals of Dermatology” Using a hair dryer at 15 cm with continuous motion causes less damage than natural drying.
31 citations
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June 2010 in “Journal of dermatology” Hair bleaching causes significant damage to hair and skin.
40 citations
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February 2002 in “International Journal of Dermatology” Permanent hair dye damages hair but it mostly recovers after 8 weeks; using certain hair care products can help repair it.
150 citations
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July 2001 in “Clinics in dermatology” Proper haircare and communication with doctors are key to managing hair loss and avoiding damage.
44 citations
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January 2005 in “Dermatology” Hair problems can be caused by genetics or the environment, and treatment should focus on the cause and reducing hair damage.
26 citations
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January 1994 in “McGraw-Hill eBooks” Many hair loss conditions can be treated.
12 citations
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November 1987 in “Pediatric dermatology” Four children had unmanageable pale blond hair due to uncombable-hair syndrome.
11 citations
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February 1982 in “RePub (Erasmus University, Rotterdam)” Studying hair roots can help diagnose hair diseases and guide treatments.
