July 2007 in “International Journal of Cosmetic Science” The new polymer improves dyed hair's color, moisture, shine, and smoothness.
2 citations
,
June 2018 in “Cosmetics” AMPD is a better and less damaging alternative to ammonium hydroxide for hair bleaching.
4 citations
,
August 2014 in “Journal of molecular structure” Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.
September 2025 in “Biochemical and Cellular Archives/Biochemical and cellular archives” Herbal hair care products are effective, safe, and eco-friendly alternatives to synthetic ones.
1 citations
,
January 1998 in “Cosmetics and toiletries” Both amodimethicone and dimethicone copolyol amine are effective hair conditioners.
April 2026 in “Microscopy Research and Technique” The high-cost product with coconut oil and glycerol effectively restores severely damaged hair.
1 citations
,
October 2009 in “International Journal of Cosmetic Science” A new keratin treatment can strengthen and protect aging hair.
51 citations
,
March 2001 in “Clinics in dermatology” Bleaching damages hair, making it rougher and weaker.
August 2023 in “Journal of Health and Beauty” K-30 treatment restores protein and weight in damaged hair, making it similar to healthy hair.
37 citations
,
October 2015 in “PeerJ” Perming significantly changes hair's molecular structure, while shampoo and conditioner do not.
1 citations
,
January 2004 in “Cosmetics and toiletries” Polyquaternium-64 helps damaged hair look healthy again.
1 citations
,
January 2013 in “PubMed” Permanent wave treatment with thioglycolic acid changes hair structure by altering disulfide bonds.
Hair care products can cause skin irritation and allergies.
December 2012 in “SWU eJournals System (Srinakharinwirot University)” Chemical hair removal can cause skin irritation and other issues, but natural alternatives are being explored.
October 2022 in “Journal of the American Academy of Dermatology” "Clean" shampoos use fewer allergenic preservatives than traditional ones but still contain fragrances, and their actual risk of causing skin reactions is unclear.
1 citations
,
January 2017 in “PubMed” All five hair fiber products improved appearance but didn't stick to completely bald areas.
5 citations
,
January 1992 Silicones in shampoos make hair smoother, easier to manage, and reduce friction.
10 citations
,
June 2001 in “International Journal of Cosmetic Science” Natural shampoos made in the lab conditioned hair better than commercial ones with chemicals.
4 citations
,
October 2007 in “PubMed” Polyquaternium-70 shampoo is best for reducing frizz.
January 2026 in “ChemistrySelect” The bio-based hair serum is a sustainable and effective alternative to silicone serums, offering better hair protection and eco-friendly benefits.
October 2025 in “Nephrology Dialysis Transplantation” Hair-straightening products with glyoxylic acid can cause kidney damage.
90 citations
,
July 1993 in “Journal of Investigative Dermatology”
10 citations
,
January 2012 in “Journal of Biological Macromolecules” Keratin film can effectively replace human hair for testing hair damage.
70 citations
,
June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
2 citations
,
December 2010 in “PubMed” The new stiffness test works well for gels but not for sprays.
January 2006 in “Journal of Society of Cosmetic Chemists of Japan” The new hybrid polymer improves dyed hair's color, feel, and manageability.
March 2023 in “Asian journal of beauty & cosmetology” Keratin pretreatment improves the quality of damaged hair during perming.
12 citations
,
October 2007 in “PubMed” Keratin helps protect and strengthen hair, reducing damage and color fading.
15 citations
,
June 2019 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.
1 citations
,
March 2023 in “Journal of Natural Fibers” A gentler, less damaging method for curling hair using tyrosine works well initially but fades after washing.