8 citations,
October 2014 in “Journal of analytical toxicology.” Chemical hair straightening significantly reduces detectable drug levels in hair.
10 citations,
November 2016 in “International Journal of Cosmetic Science” A tough membrane between the outer and inner layers of human hair protects it from damage.
8 citations,
June 2020 in “Colloids and surfaces. B, Biointerfaces” Heating hair proteins changes their structure and may improve their blood clotting ability.
5 citations,
October 2003 in “PubMed” Chemical treatments and light exposure damage hair proteins.
9 citations,
January 2011 in “Journal of X-ray science and technology” Perming and bleaching damage hair differently, with bleached hair having more cysteic acid in the cuticle.
21 citations,
April 2018 in “Journal of Dermatological Science” Cilostazol helps hair grow by making hair root cells grow faster and changing growth factor levels.
Some plant-based ingredients may help with hair growth and care, but more research is needed to confirm their effectiveness.
92 citations,
June 2005 in “Journal of Investigative Dermatology” All-trans retinoic acid causes hair loss by increasing TGF-β2 in hair follicle cells.
2 citations,
July 2019 in “Journal of lasers in medical sciences” Laser treatment and synovial fluid can change hair follicle cells to resemble joint cells, with the changes being more significant when both treatments are used together.
May 2024 in “Indian journal of pharmacy and pharmacology” Luliconazole is more effective than ketoconazole at repairing damaged hair cuticles.
157 citations,
April 1997 in “International journal of legal medicine” Cosmetic hair treatments like bleaching and dyeing reduce drug levels in hair samples.
5 citations,
May 2022 in “Fashion and Textiles” Hair conditioners with argan oil or camellia oil improve the strength and color of bleached hair.
2 citations,
March 2017 in “Veterinary dermatology” Herbal paste and oil extract might improve dog hair quality by retaining lipids.
10 citations,
November 1984 in “Journal of Colloid and Interface Science” The study found that the Marangoni effect causes the uneven wetting of surfactant-coated hair due to the surfactant moving into the water.
13 citations,
January 2020 in “Nanoscale” Finasteride and baicalin in phospholipid vesicles effectively promote hair growth and increase follicle count.
3 citations,
June 2019 in “Journal of cosmetic dermatology” Lower pH straighteners change hair more but weaken it.
39 citations,
January 2006 in “Journal of Cosmetic and Laser Therapy” Pneumatic Skin Flattening (PSF) significantly reduces pain during laser and IPL hair removal.
3 citations,
August 1980 in “Acs Symposium Series” Hair increases in size when it absorbs water, and treatments like bleaching affect how much water it can take in.
2 citations,
April 2016 in “Veterinary dermatology” A 2% climbazole shampoo effectively reduces fungal growth on dog hair, and using a physiological shampoo afterward may boost this effect.
September 2023 in “Ain Shams medical journal” 31% of female high school students in Minia have hair loss from tight hairstyles, which can become permanent if not treated early.
January 2024 in “Molecules (Basel. Online)” Juglone from walnut extracts may help repair damaged hair.
July 2018 in “Elsevier eBooks” Telogen Effluvium is a common, usually reversible hair loss condition, often improved by removing the trigger and possibly treated with various products, though their effectiveness is uncertain.
7 citations,
October 2020 in “International Journal of Cosmetic Science” Different sizes of keratin peptides can strengthen hair, with smaller ones possibly increasing volume and larger ones repairing damage.
42 citations,
April 2008 in “Acta materialia” Different ethnicities and treatments affect human hair strength and structure.
53 citations,
October 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Topical calcitriol-analogs can reduce hair loss caused by chemotherapy.
12 citations,
January 2020 in “Analyst” Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
117 citations,
August 2005 in “Ultramicroscopy” Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
2 citations,
June 2018 in “Cosmetics” AMPD is a better and less damaging alternative to ammonium hydroxide for hair bleaching.
42 citations,
January 2009 in “Colloids and Surfaces B: Biointerfaces” A certain surfactant sticks to human hair, making it change from water-repelling to water-attracting, which could help in hair conditioning.
5 citations,
January 2004 in “Journal of applied polymer science” Urea helps hair dye penetrate better and last longer.