January 1990 in “Springer eBooks” Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.
April 1955 in “Archives of pediatrics & adolescent medicine” Children's skin diseases need special care and treatment.
6 citations,
January 2016 in “International journal of trichology” Children's hair is more elastic, but tensile strength is similar across different factors.
6 citations,
December 1966 in “Textile Research Journal” Animal hair fibers like wool and mohair are strong when dry, but vicuna fibers are very brittle.
1 citations,
January 2022 in “International journal of trichology” Type 3 hair oil strengthens hair more than coconut oil.
1 citations,
March 2005 in “International Journal of Cosmetic Science” Twisting hair weakens it, but strength can be recovered at low twist levels.
October 2023 in “International journal of research in dermatology” Mintop shampoo improved hair smoothness, shine, and strength after ten washes.
August 2007 in “Microscopy and Microanalysis” Hair fibers break by cuticle cell slipping, shape changing, cuticle fraying, and surface cracking when stretched under specific conditions.
February 2024 in “Data in Brief” Curly hair's strength and flexibility vary with moisture and temperature.
January 2009 in “Chinese journal of Clinical Medicine” 47 citations,
December 2007 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” Healthy hair is shiny, smooth, and has clean ends.
45 citations,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
31 citations,
June 2010 in “Journal of dermatology” Hair bleaching causes significant damage to hair and skin.
29 citations,
December 2011 in “British Journal of Dermatology” A new hair treatment with caffeine and other ingredients makes hair thicker and less likely to break.
11 citations,
April 2016 in “PubMed” New imaging and testing methods can effectively assess hair shape changes and damage.
9 citations,
July 2014 in “Skin research and technology” Stretching damages Caucasian hair's structure more easily than Asian hair.
8 citations,
November 2022 in “International Journal of Cosmetic Science” Human hair varies widely and should be classified by curl type rather than race.
6 citations,
May 2020 in “Molecules/Molecules online/Molecules annual” Yak belly hair has higher porosity and is less stiff than human hair, making it absorb dye better but less suitable as a direct substitute for hair dyeing.
5 citations,
August 2007 in “PubMed” Amino acids in conditioners improve hair strength, hydration, and color retention.
4 citations,
June 2022 in “ACS applied materials & interfaces” New wig coating technique makes them more durable, UV resistant, and less static.
4 citations,
June 2022 in “Journal of cleaner production” New eco-friendly method strengthens and sets hair using light and causes less damage.
3 citations,
June 2019 in “Journal of cosmetic dermatology” Lower pH straighteners change hair more but weaken it.
3 citations,
March 2013 in “Journal of the Society of Cosmetic Scientists of Korea” Transglutaminase can repair damaged hair, making it stronger and shinier.
3 citations,
January 2002 in “Springer eBooks” Alkaline hair relaxers damage hair, but cationic and non-ionic polymers can help reduce this damage.
2 citations,
September 2004 in “International Journal of Cosmetic Science” Hair quality is genetically determined and linked to its composition and strength.
1 citations,
November 2023 in “Polymer International” The keratin-graphene oxide composite is stronger, more heat resistant, and better at blocking gases than pure keratin, offering an eco-friendly use for waste hair.
1 citations,
December 2022 in “Journal of applied biological chemistry” TRP-hair essence protects hair from heat damage, maintains color, and strengthens hair.
1 citations,
November 2022 in “Molecules/Molecules online/Molecules annual” Low-molecular weight hyaluronate can make damaged hair stronger.
1 citations,
April 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Aspartic acid at 0.75% makes perms more effective and less damaging to hair.
1 citations,
January 2019 in “Journal of pharmacy & pharmacognosy research” The flavonoid-rich extract of Equisetum hyemale can help regrow hair in cases of alopecia.