90 citations
,
July 2014 in “Conservation Physiology” Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.
69 citations
,
May 2016 in “General and Comparative Endocrinology” External factors can significantly affect hair cortisol levels, so it's not always a reliable stress marker.
January 2026 in “Western Journal of Nursing Research” Hair cortisol levels don't reliably indicate chronic stress in people with multiple sclerosis.
June 2020 in “Authorea (Authorea)” First-time mothers had higher stress hormone levels in late pregnancy than mothers who had given birth before.
Hair can naturally regain color after greying, and this change may be linked to stress levels.
March 2023 in “Lecture Notes in Education Psychology and Public Media” Beards and long hair may affect how attractive someone is to the opposite sex.
Hair can naturally regain color, and stress might influence greying and its reversal.
11 citations
,
April 2020 in “Animals” Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.
6 citations
,
November 2022 in “Forensic Science Medicine and Pathology” Genetic markers can help predict ear shapes for forensic use.
Germinated perilla seeds can naturally promote hair growth and prevent hair loss.
10 citations
,
December 2001 in “PubMed” The conclusion is that substances can penetrate hair fibers through multiple pathways, including both the cell membrane complex and the non-keratinous parts.
3 citations
,
January 2023 in “Agronomy” KDML105 bran extract may help with hair growth and prevent hair loss.
October 2025 in “International Journal of Research in Dermatology” The Ayurvedic treatment improved hair growth and reduced hair loss safely.
Perilla seed extract may help prevent hair loss better than some standard treatments.
November 2024 in “Plants” Et-BB3-CMU rice bran extract may be a promising natural option for promoting hair growth and preventing hair loss.
Hair RiseTM microemulsion effectively promotes hair growth and treats hair loss better than standard treatments.
April 2024 in “Cosmetics” Different oils affect hair flexibility and strength, with their impact varying on whether hair is virgin or bleached.
December 2023 in “The journal of physical chemistry. B (1997 : Online)” Human hair keratin might be good for filtering out harmful substances from water.
Arabica coffee pulp extract may help prevent hair loss and promote hair growth.
June 2023 in “Frontiers in Genetics” Genes related to calcium signaling and lipid metabolism are important for curly hair in Mangalitza pigs.
53 citations
,
July 2016 in “Cosmetics” Future hair cosmetics will be safer and more effective.
6 citations
,
January 2020 32 citations
,
January 2017 in “Physiology & Behavior” New hair growth corticosterone levels are higher in diabetic mice, indicating long-term stress.
1 citations
,
January 2018 in “Journal of microscopy and ultrastructure” The method can identify minerals in hair from water, and using coconut oil or conditioner can prevent mineral buildup.
March 2026 in “Nutrients” Hair manganese may relate to cardiometabolic health, not coronary artery disease severity.
Hair proteins in preschool children and their mothers could indicate developmental changes and health status.
7 citations
,
November 2022 in “International Journal of Molecular Sciences” As Japanese males age, their hair darkens due to increased melanin, with males generally having darker hair than females.
15 citations
,
November 2015 in “Journal of Cosmetic Dermatology” Botanicals like green tea extract show potential for hair growth, but more research is needed.
2 citations
,
July 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Autophagy changes the protein makeup of hair.
2 citations
,
December 2022 in “International journal of molecular sciences” Plucked hairs can be used instead of skin biopsies to study hair traits because they contain specific cells related to hair.