May 2009 in “International Journal of Cosmetic Science” Permanent waving damages hair protein and weakens hair, especially with repeated treatments using sodium thioglycolate.
Perms can damage hair and scalp, so proper assessment and care are essential.
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.
Curly hair may be caused by a muscle contraction, and muscle relaxants might help treat it.
January 2010 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Chemical relaxers may cause scarring alopecia in black women.
November 2025 in “International Journal of Biological Macromolecules” This eco-friendly hair dye method improves hair health and color durability.
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.
7 citations
,
August 2018 in “Journal of cosmetic dermatology” Chemical hair straightening improves smoothness and shine but may cause side effects, suggesting a need for safer methods.
May 2019 in “Case medical research”
3 citations
,
June 2023 in “ACS sustainable chemistry & engineering” The study found a green method for strengthening hair works on all hair colors and is eco-friendly.
11 citations
,
June 2018 in “Annales de dermatologie et de vénéréologie” Hair care products can cause skin irritation and allergies.
40 citations
,
June 2013 in “Journal of cosmetic dermatology” Brazilian keratin treatments can straighten hair but may contain harmful formaldehyde.
5 citations
,
November 2024 in “Frontiers in Nutrition” LB-P9 supplements improve hair health and satisfaction without side effects.
1 citations
,
June 2014 in “[Thesis]. Manchester, UK: The University of Manchester; 2014.” Chemical modifications can alter hair's stability and flexibility, with hydrophobic interactions helping maintain structure in humid conditions.
43 citations
,
September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal cream effectively smooths and straightens hair safely.
January 2005 in “Cosmetic Surgery Times” Infrared light therapy helps regrow hair.
3 citations
,
January 2009 in “Sen'i Gakkaishi” Using both TGA and DTDG in hair straightening reduces hair damage compared to using TGA alone.
5 citations
,
September 2021 in “PubMed” Hair removal methods vary in effectiveness and side effects, with electrolysis being the only permanent solution.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal cream effectively smooths and straightens hair safely.
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.
1 citations
,
January 2020 in “Journal of the Society of Cosmetic Scientists of Korea”
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Herbal hair conditioners are a safe and effective alternative to synthetic ones for healthy, manageable hair.
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Herbal hair conditioners are a safe and effective alternative to synthetic ones for healthy, manageable hair.
11 citations
,
June 2013 in “PubMed” The automated flat iron can permanently straighten hair without chemicals, especially at 154°C, and silicone improves the results.
January 2024 in “Indian Journal of Pharmaceutical Sciences” Relaxing certain muscles might straighten curly hair.
19 citations
,
January 1999 in “Journal of cutaneous laser therapy” Laser hair removal is a promising method for long-term or permanent hair removal.
September 2025 in “Journal of Surfactants and Detergents” Shampoos with sodium lauroyl methylaminopropionate improve hair lubrication and reduce irritation.
24 citations
,
April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
25 citations
,
May 2019 in “Heliyon” Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.