23 citations
,
June 2014 in “International Journal of Cosmetic Science” Glyoxylic acid is a safer alternative to formaldehyde for hair straightening and effectively changes hair structure.
20 citations
,
December 2012 in “Journal of molecular structure” The study found that thioglycolic acid breaks down hair bonds more consistently than l-cysteine, which is less damaging to hair.
June 2023 in “Journal of the American Academy of Dermatology” Chemical hair relaxers are not proven to cause uterine cancer.
February 2019 in “IP Indian journal of clinical and experimental dermatology” Continuous use of hair relaxers and curlers can cause hair loss, dryness, dandruff, thinning, greying, and split ends.
July 2023 in “Nature Reviews Chemistry” A new method strengthens hair without using harmful chemicals.
8 citations
,
January 2019 in “Annals of Dermatology” Bilobetin may help reduce acne by decreasing sebum production.
January 2020 in “Journal of Clinical Dermatology” Dutasteride helps increase hair density in patients with female-pattern hair loss by activating a new growth mechanism.
25 citations
,
May 2008 in “Journal of cosmetic dermatology” Conditioning agents, especially jojoba oil and lauryl PEG/PPG-18/18 methicone, protect and strengthen chemically straightened Afro-ethnic hair.
December 2012 in “SWU eJournals System (Srinakharinwirot University)” Chemical hair removal can cause skin irritation and other issues, but natural alternatives are being explored.
6 citations
,
October 2023 in “Skin Research and Technology” Endolift laser treatment significantly tightens eyelids and raises eyebrows.
August 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Using natural polyphenol cross-linkers like tannic acid and green tea extract in perm treatments improves curling and protects hair.
4 citations
,
June 2022 in “Journal of cleaner production” New eco-friendly method strengthens and sets hair using light and causes less damage.
2 citations
,
January 2014 in “Sen i Gakkaishi” The new hair straightening method keeps hair straight permanently by using specific creams and heat.
January 2024 in “Brazilian Journal of Hair Health” Combining low-level laser therapy with topical corticosteroids effectively improved Lichen Planopilaris symptoms.
October 2023 in “Journal of Molecular Liquids” A new method using imidazole-based liquids efficiently extracts keratin from yak hair.
January 2013 in “프로그램북(구 초록집)” Hair perms or treatments seem safe to use up to 3 to 4 times during pregnancy.
December 2025 in “Universal library of medical and health sciences.” Amino acids like arginine and cysteine protect hair during chemical treatments, keeping it strong and less brittle.
January 2026 in “Molecules” A new perming method is less damaging to hair and works as well as traditional methods.
May 2026 in “Journal of Clinical Oncology” Using hair relaxers may increase breast cancer risk.
5 citations
,
January 1990 in “Journal of Society of Cosmetic Chemists of Japan” Permanent wave lotion can extract proteins from hair, especially when pH is higher, and repeated treatments or bleaching can damage hair.
January 2025 in “Dermatology Research and Practice” The treatment effectively repairs and strengthens damaged hair by restoring natural lipids.
207 citations
,
January 2011 in “Dermatologic Therapy” Laser hair removal is the most requested cosmetic procedure and has become a scientifically-based treatment suitable for all skin types.
June 2024 in “Journal of Clinical Oncology” Frequent use of chemical hair relaxers may increase endometrial cancer risk in Black women.
June 2001 in “Proceedings of SPIE” Low energy laser therapy effectively treats certain skin conditions and improves recovery time without side effects.
13 citations
,
March 2017 in “Skin Research and Technology” Formaldehyde damages curly hair more than glyoxylic acid.
January 2010 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Chemical relaxers may cause scarring alopecia in black women.
125 citations
,
February 1971 in “Biochemistry” Specific cross-linkages help make hair proteins stable and strong.
43 citations
,
September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.
September 2010 in “International Journal of Cosmetic Science” Chemical treatments change hair surface properties, making it more hydrophilic and able to bind conditioners.
52 citations
,
February 2005 in “Biopolymers” Chemical hair straightening changes hair proteins and mostly fixes broken bonds.