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.
3 citations
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August 2008 in “PubMed” This study found that digital perm treatments using sodium thioglycolate lotion led to the most significant reduction in protein content and greater hair damage compared to other methods and lotions.
May 2009 in “International Journal of Cosmetic Science” In this study, permanent waving treatments, especially those using lotion B and repeated procedures, were found to significantly damage hair protein content and physical properties.
1 citations
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January 2017 in “Journal of Clinical Trials & Patenting” This study assessed the safety and efficacy of Romantaque lotion for unwanted hair growth and found statistically significant hair growth inhibition with no adverse effects in 30 volunteers after repeated applications over one year.
August 2024 in “Journal of Home Economics Research” This source reports that among female youths in Umunneochi, common hair care products like serums, sprays, and lotions fall below average usage, and it concludes that consulting dermatologists and avoiding counterfeit products could prevent hair damage.