August 2023 in “Journal of Health and Beauty” K-30 treatment restores protein and weight in damaged hair, making it similar to healthy hair.
18 citations
,
March 2009 in “Skin pharmacology and physiology” Sunlight damages hair, causing cuticle loss, protein changes, and discoloration.
5 citations
,
November 2003 in “PubMed” Chemical treatments and light exposure damage hair proteins.
4 citations
,
May 2014 in “PubMed” Monoethanolamine-based hair colorants can cause more damage to hair than ammonia-based ones.
October 2024 in “UNESP Institutional Repository (São Paulo State University)” Straightening and dyeing damage hair structure.
2 citations
,
December 2013 in “Journal of Cosmetic Dermatology” UV treatment can damage hair, so protection is advised.
2 citations
,
July 2013 in “Fashion business” Keratin essence protects and improves damaged hair.
1 citations
,
January 2010 in “LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas)” Conditioners improved hair protein retention and combing ease, with some providing thermal protection.
2 citations
,
January 1981 High temperatures and certain chemicals can significantly change the amino acid content in human hair.
April 2026 in “Microscopy Research and Technique” The high-cost product with coconut oil and glycerol effectively restores severely damaged hair.
8 citations
,
January 2018 in “Journal of cosmetic dermatology” Conditioners in hair dye reduce damage and improve combability.
24 citations
,
October 2008 in “PubMed” Excessive sun exposure damages hair, causing protein loss and color changes.
Sea cucumber extract reduces hair loss and improves scalp health after dyeing.
October 2023 in “Biomimetics” The new hair-dyeing shampoo is safe, colors hair evenly, and strengthens it.
May 2026 in “Journal of Photochemistry and Photobiology” Solar radiation and pollution damage hair, especially light-colored and bleached hair.
7 citations
,
September 2004 in “International Journal of Cosmetic Science” Blond hair lightens more with visible light directly, while ultraviolet light lightens it after washing by damaging other hair parts.
16 citations
,
November 2009 in “Experimental dermatology” Ionizing radiation damages human hair follicles by stopping cell growth, causing cell death, disrupting color, and increasing stress and damage markers.
January 1994 in “Journal of the society of cosmetic chemists”
8 citations
,
January 2016 in “Journal of fiber science and technology” Bleaching hair increases cysteic acid levels in a predictable way.
January 2025 in “International Journal of Cosmetic Science” Citric acid strengthens and improves damaged hair.
66 citations
,
September 2005 in “Photochemical & photobiological sciences” We don't fully understand how sunlight damages different types of hair.
January 2025 in “Dermatology Research and Practice” The treatment effectively repairs and strengthens damaged hair by restoring natural lipids.
34 citations
,
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.
Hair fibers degrade and change color in very basic water.
150 citations
,
July 2001 in “Clinics in dermatology” Proper haircare and communication with doctors are key to managing hair loss and avoiding damage.
January 1996 in “대한피부과학회지” Wait at least 8 weeks between hair dyeing for cuticle recovery.
January 2005 in “Seibutsu Butsuri/Seibutsu butsuri” Chemical treatments damage hair more than UV exposure, making it thinner and less flexible.
3 citations
,
January 2002 in “Springer eBooks” Alkaline hair relaxers damage hair, but cationic and non-ionic polymers can help reduce this damage.
6 citations
,
March 2015 in “Journal of The American Academy of Dermatology” Hair dye can make it hard to diagnose scalp conditions correctly.
10 citations
,
March 2016 in “Toxicology and applied pharmacology” Using A132 hair dye with sunlight can cause skin damage and hair loss.