September 2024 in “Heliyon” Repeated hair dyeing significantly damages hair.
53 citations
,
July 2016 in “Cosmetics” Future hair cosmetics will be safer and more effective.
7 citations
,
September 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.
November 2025 in “Plant Science Today” Natural anti-aging products from plants may help improve skin health.
October 2025 in “Journal of Drugs in Dermatology” Topical caffeine can help with hair growth and reduce hair loss safely.
4 citations
,
July 2024 in “BMC Zoology” Dromedary camel hair structure and mineral content change with age.
4 citations
,
September 2025 in “Pharmaceutics” Natural hydrogels can improve wound healing but face challenges in becoming widely used in clinics.
3 citations
,
December 2021 in “Skin research and technology” Higher hair luminosity and shine mean higher perceived transparency.
February 2025 in “International Journal of Cosmetic Science” Protein carbonylation is a sensitive marker for oxidative damage in hair, especially from light exposure.
January 2023 in “Fashion and textiles” Cationic and nonionic surfactants provide better color intensity and resistance for semi-permanent hair dye than anionic surfactants.
August 2025 in “Nutrients” Ageratum conyzoides extract promotes hair growth and regrowth.
February 2024 in “Molecules/Molecules online/Molecules annual” NMN could potentially treat hair loss by reducing oxidative stress and improving cell health.
90 citations
,
July 2014 in “Conservation Physiology” Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.
August 2025 in “Plastic and Aesthetic Research” Microneedling can effectively treat hair loss and works well with other treatments, but more research is needed.
January 2025 in “Conservation Physiology” Bear hair grows 0.10 to 1.05 mm per day, varying by individual and season.
35 citations
,
January 1981
5 citations
,
February 2022 in “Acta Biomaterialia” Nanomaterials can improve hair care products and treatments, including hair loss and alopecia, by enhancing stability and safety, and allowing controlled release of compounds, but their safety in cosmetics needs more understanding.
8 citations
,
March 2015 in “Molecular Medicine Reports” Hair dye ingredient PPD causes cell death and aging in human hair cells by altering microRNA levels.
January 2024 in “Molecules (Basel. Online)” Juglone from walnut extracts may help repair damaged hair.
17 citations
,
May 2019 in “Molecules” These temporary hair dyes may be harmful to human health.
July 2025 in “Bioactive Materials” New engineering methods show promise for regenerating hair follicles using stem cells and advanced technologies.
February 2025 in “Advanced Composites and Hybrid Materials” Glutamic acid microneedle patches promote better hair growth than traditional treatments.
73 citations
,
December 2015 in “Nature Genetics” Mutations in TBX3 cause horses to have more even hair color instead of Dun camouflage.
29 citations
,
June 1998 in “Developmental Biology” More melanoblasts in hair follicles mean better survival and proper hair pigmentation.
21 citations
,
June 2023 in “Proceedings of the National Academy of Sciences” Tightly curled scalp hair helps reduce heat from the sun, protecting against overheating.
21 citations
,
May 2016 in “Experimental and Therapeutic Medicine” MMP-2 and MMP-9 help hair grow, while their inhibitors peak when hair growth slows.
15 citations
,
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” Mice with extra human KLK14 had hair and skin problems, including weaker cell bonds and inflammation, linked to Netherton syndrome.
9 citations
,
October 2024 in “Burns & Trauma” Air-liquid interface culture improves hair follicle development in skin organoids.
4 citations
,
June 2024 in “Animals” Genes like MC1R, TYR, MITF, ASIP, and KIT determine horse and donkey coat colors and affect breeding and health.
2 citations
,
July 2025 in “Frontiers in Veterinary Science” MicroRNAs and AI can improve cashmere goat hair quality and aid in hair disorder diagnosis.