Acidic sandy clay damages archaeological hair the most, while dry conditions preserve but make it brittle; silicone oil can help keep the hair flexible.
August 2023 in “Journal of Health and Beauty” K-30 treatment restores protein and weight in damaged hair, making it similar to healthy hair.
September 2025 in “Sahel Journal of Life Sciences FUDMA” Chemical hair straighteners can severely damage hair and scalp with repeated use.
November 2024 in “Fizioterapevt (Physiotherapist)” High-intensity phototechnology, especially with other treatments, effectively improves quality of life for diffuse alopecia patients.
September 2011 in “European journal of cancer” 10 citations
,
January 1994 Hair can be straightened using different chemicals, not just strong alkali.
Hair movement can indicate hair quality and health.
15 citations
,
January 2013 in “Journal of Cutaneous and Aesthetic Surgery” The modified Direct Hair Transplantation method is effective for treating baldness with better graft survival and less damage than standard techniques.
24 citations
,
August 2021 in “Scientific Reports” Non-thermal plasma could help hair growth by activating key cell signals.
38 citations
,
August 1973 in “Journal of Investigative Dermatology” 1 citations
,
December 2022 in “Skin Research and Technology” The technique helps measure how hair styling ingredients affect hair's stiffness and flexibility.
1 citations
,
March 2005 in “International Journal of Cosmetic Science” Twisting hair weakens it, but strength can be recovered at low twist levels.
2 citations
,
January 2017 Hair movement can indicate hair quality and health.
Stretching-setting treatment works for wool and human hair using specific equipment and methods.
5 citations
,
January 1990 in “Journal of Society of Cosmetic Chemists of Japan” Permanent wave lotion can extract proteins from hair, especially when pH is higher, and repeated treatments or bleaching can damage hair.
April 2026 in “Microscopy Research and Technique” The high-cost product with coconut oil and glycerol effectively restores severely damaged hair.
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.
11 citations
,
January 2016 in “International Journal of Biological Macromolecules” Enzymatic phosphorylation of hair keratin improves the effectiveness of hair products with cationic ingredients.
To repair damaged hair, use products with proteins, lipids, and moisture like keratin, citric acid, and oils.
Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.
February 2026 in “Journal of the Korean Society of Cosmetology” Silicone oil viscosity affects hair curling and damage during treatments.
8 citations
,
January 2018 in “Journal of cosmetic dermatology” Conditioners in hair dye reduce damage and improve combability.
December 2025 in “British Journal of Dermatology” 5 citations
,
August 2024 in “International Journal of Cosmetic Science” Particles stick better to healthy hair than damaged hair.
December 2024 in “Medical alphabet” Combining erbium laser, laser blood irradiation, and minoxidil is most effective for treating diffuse alopecia.
January 2021 in “Lecture notes in mechanical engineering” High temperatures, acidic conditions, and too much coconut oil damage hair, while a pH of 5 to 7 keeps it healthy.
April 2018 in “Journal of Investigative Dermatology” Stabilizing HIF1A in hair follicles increases glycolysis, which may help reduce oxidative stress and support hair growth.
Rosehip extract improves hair treatment and waving efficiency with cysteine but not with thioglycolate.
3 citations
,
January 2019 in “Skin Research and Technology” Frequent use of hair straighteners can cause hair loss similar to scarring alopecia in young Turkish women.
9 citations
,
April 2019 in “Journal of structural biology” Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.