14 citations
,
December 2021 in “International journal of molecular sciences” Growth hormone levels affect hair growth and loss, with too much causing excess hair and too little leading to hair loss.
12 citations
,
August 2022 in “Stem cell reviews and reports” Increasing PBX1 reduces aging and cell death in hair follicle stem cells by boosting SIRT1 and lowering PARP1 activity.
12 citations
,
July 2020 in “Aging” The protein EZH2 blocks microRNA-22, increasing STK40 protein, which helps hair follicle stem cells change and grow hair.
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.
9 citations
,
July 2018 in “Acta biomaterialia” Eyelash curvature is linked to the thickness of the cuticle layer at the root.
4 citations
,
October 2018 in “Cell Stem Cell” Hox genes control hair growth patterns in mammals by regulating stem cell activity in the skin.
2 citations
,
November 2024 in “JAAD Case Reports” Anti-PD-L1 immunotherapy can cause hair loss and unexpected hair color change, but treatment can restore hair growth and color.
2 citations
,
December 2021 in “International journal of Ayurveda and pharma research” Ayurvedic treatment helped reduce PCOS symptoms in a 19-year-old girl.
2 citations
,
December 1994 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” The treatment effectively reduced hair growth and was safe for patients with PCOS, but it needs better bleeding control.
1 citations
,
November 2023 in “Cosmetics” Surfactants damage hair, but sealing the cuticle can prevent this.
1 citations
,
January 2022 in “The Keio Journal of Medicine” Hair follicles regulate immune cells in the skin, and disrupting certain pathways can lead to skin issues and infections.
1 citations
,
April 2019 in “PubMed” The medulla in Asian scalp hair has a tubular structure that allows ions and large molecules to flow through it.
Systemic lupus erythematosus is diagnosed earlier in males than females.
1 citations
,
December 2014 in “Journal of the Society of Cosmetic Scientists of Korea” CRF can cause hair loss, but blocking its receptors might prevent this.
January 2026 in “Psychoneuroendocrinology” Loneliness raises stress levels in older African American men but not women.
November 2025 in “Advanced Science” A new nanozyme using EGCG and L-arginine boosts hair growth by safely increasing beneficial oxidative stress.
June 2025 in “Stem Cell Research & Therapy” Isoproterenol may help treat hair loss by activating hair follicle stem cells.
Higher PD-1 levels mean fewer CD8+ T cells in alopecia areata hair follicles.
April 2023 in “CRC Press eBooks” Hair care products mainly work on the hair's surface and need professional guidance for use.
December 2022 in “Journal of Phytonanotechnology and Pharmaceutical Sciences” Ayurvedic treatment helped a woman with PCOS become pregnant and have a healthy baby.
January 2021 in “Acta Scientiae Veterinariae” Levothyroxine effectively treated a dog's skin and hair problems caused by hypothyroidism.
February 2019 in “International Journal of Dermatology and Clinical Research” Nε-(carboxymethyl) lysine delays hair growth by blocking a key protein.
38 citations
,
December 2006 in “Journal of Investigative Dermatology” Keratin patterns in hair follicles help understand hair growth and potential hair and nail disorders.
2 citations
,
October 2022 in “Journal of structural biology” Older thin hair is not just thinner but also has different shape, structure, and stiffness.
March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” Hair cuticles remain stable and resilient under stress due to strong protein content and crosslinking.
April 2025 in “Pharmaceuticals” APA is a promising new compound for repairing damaged hair, outperforming Olaplex® in strength and elasticity.
November 2024 in “Biophysical Chemistry” Hair structure changes immediately during perm treatment, with initial damage partially restored later.
Copper levels in green hair decreased significantly after treatment.
97 citations
,
January 2005 in “Wear” Human hair and skin friction vary by ethnicity, hair type, and environmental conditions.
13 citations
,
January 2016 in “Annals of Dermatology” Stress can slow hair growth by affecting certain cells and pathways.