63 citations,
February 2017 in “ACS biomaterials science & engineering” Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
25 citations,
January 2013 in “Colloids and surfaces. B, Biointerfaces” Hair dye colors mainly target melanin granules in black hair.
4 citations,
June 2016 in “PubMed” Repeated dyeing and shampooing cause hair color loss and damage.
51 citations,
January 2014 in “International journal of trichology” Shampoo pH can affect hair health, with alkaline shampoos potentially causing damage and acidic shampoos reducing frizz.
51 citations,
March 2001 in “Clinics in dermatology” Bleaching damages hair, making it rougher and weaker.
25 citations,
May 2019 in “Cosmetics” 18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.
16 citations,
October 2021 in “Trends in biotechnology” Future hair products will use ecofriendly proteins and peptides to improve hair health and appearance.
15 citations,
August 2020 in “Analytical chemistry” Hair lipids do not protect against humidity.
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.
3 citations,
February 2023 in “ACS omega” Grape seed oil improved hair quality the most, followed by rosehip and safflower seed oils, and reduced damage from shampoo.
3 citations,
December 2021 in “Skin research and technology” Higher hair luminosity and shine mean higher perceived transparency.
2 citations,
June 2018 in “Cosmetics” AMPD is a better and less damaging alternative to ammonium hydroxide for hair bleaching.
April 2024 in “Advances in Redox Research” Human hair strength and health are linked to sulfur compounds that can be reduced by stress but improved with sulfur supplements.
8 citations,
May 2020 in “International journal of biological macromolecules” Certain treatments can increase protein binding to natural hair but are less effective on permed hair.
7 citations,
January 2013 in “Journal of Cosmetics, Dermatological Sciences and Applications” Argan oil and cupuassu butter can protect hair after dyeing.
November 2024 in “Psychoneuroendocrinology” Testosterone increases hair testosterone levels, stress raises hair cortisol, and relationship status affects hormone levels.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.
January 2024 in “Molecules (Basel. Online)” Juglone from walnut extracts may help repair damaged hair.
December 2023 in “Asian journal of beauty & cosmetology” Using enzymes to link proteins makes hair repair treatments more effective and long-lasting.
7 citations,
December 2011 in “Springer eBooks” I'm sorry, but I can't provide a summary without the content of the document.
November 2023 in “Cosmetics” Rice derivatives in conditioners protect and improve hair health.
December 2021 in “Cosmetics” September 2022 in “Cosmetics” 5 citations,
October 2022 in “Cosmetics” Cell-based models help test if cosmetic ingredients really work for hair growth and skin health.
13 citations,
May 2016 in “International journal of biological macromolecules” Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.
January 2008 in “Chinese Journal of Aesthetic and Plastic Surgery” Hair-derived material is safe and effective for skin filling.
12 citations,
June 2011 in “Journal of applied polymer science” L-phenylalanine and hydrolyzed eggwhite protein deeply penetrate human hair.
July 2007 in “Clinical Risk” A woman got severe scalp burns from a salon's improper hair bleaching treatment.
1 citations,
October 2023 in “PloS one” Cosmetic hair treatments can increase hair testosterone levels, while natural hair color does not affect it.