January 2012 in “Jounal of The Korean Society of cosmetology” Applying conditioner mid-treatment reduces hair damage during perms.
This study found that applying hair conditioner during a permanent wave process in the middle rather than early or late improves tensile strength, hydration, and maintains healthier hair cuticle structure.
150 citations
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April 1999 in “Dermatologic Clinics” This article reviews the biological and physical principles of laser hair removal and reports that current laser systems do not consistently achieve permanent hair follicle destruction across treated areas.
20 citations
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July 1988 in “Clinics in dermatology” This article reviews the current practices and interpretations of research data on permanent waving and hair straightening, but does not present any new research findings.
72 citations
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July 2003 in “Journal of cosmetic dermatology” This review discusses the psychological importance of hair and explores how various hair cosmetics can affect hair health, emphasizing that certain products can lead to acute hair problems when repeatedly altering the natural style.