January 2025 in “International Journal of Advanced Research in Science Communication and Technology” Polyherbal hair dyes are safer and more eco-friendly than chemical dyes.
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Scarred skin in lichen planopilaris loses immune cells due to a decrease in a specific protein in skin cells.
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.
31 citations
,
September 2008 in “International Journal of Andrology” 5-alpha-reductase inhibitors may cause a low incidence of erectile dysfunction that decreases over time.
11 citations
,
January 2006 in “International Journal of Cosmetic Science” Some oils can penetrate hair and reduce the stickiness between fibers, but mineral oil cannot.
10 citations
,
July 1997 in “Dermatologic Clinics” Laser hair transplantation can be effective but should be limited to small areas and requires more training to ensure safety and effectiveness.
9 citations
,
August 2018 in “JAAD Case Reports” Tofacitinib can temporarily improve hair growth in alopecia universalis, but its effectiveness may decrease over time.
September 2006 in “Plastic and Reconstructive Surgery” Hair transplant surgeries can be improved by preserving follicles in a special solution, and surgeries done at outpatient facilities are more profitable than those at hospitals.
11 citations
,
July 2004 in “International Journal of Cosmetic Science” The conclusion is that a new method to measure hair shine was confirmed to match people's visual assessments.
April 2025 in “Ukrainian Journal of Veterinary and Agricultural Sciences” Adding a water-soluble fatty acid complex to sheep diets improves wool growth by increasing primary hair follicle size and density.
December 2023 in “International journal of research in dermatology” The ayurvedic hair oil is safe and effective for reducing hair fall, promoting hair growth, and improving scalp health.
32 citations
,
January 2018 in “American Journal of Clinical Dermatology” Hormone therapy affects hair growth in transgender individuals, with testosterone potentially causing hair loss in trans men and estrogen reducing facial/body hair in trans women; treatment options vary.
226 citations
,
September 2001 in “Journal of The American Academy of Dermatology” Hair loss in women is genetic, diagnosed by examination and biopsy, and treated with minoxidil, finasteride, or transplantation.
61 citations
,
April 2012 in “British Journal of Dermatology” Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.
19 citations
,
August 1993 in “Journal of Cutaneous Pathology” Alopecia causes smaller hair follicles and affects growth-related structures.
3 citations
,
May 2006 in “Dermatologic Surgery” Most men's multi-hair follicles naturally stand perpendicular to a line from the top of their head, which is important for natural-looking hair transplants.
May 2006 in “Dermatologic Surgery” Most nonbald men's multi-hair follicles are naturally positioned perpendicular to a line from the scalp's crown, which is important for natural-looking hair transplants.
20 citations
,
January 2015 in “Current problems in dermatology” Hair gets thinner, grayer, and changes texture with age due to genetics, environment, and cellular changes, affecting the growth cycle.
20 citations
,
July 2010 in “Skin Research and Technology” Aging makes hair thinner and rougher, with less clear edges.
1 citations
,
May 2023 in “Jurnal Kedokteran Diponegoro” Chemotherapy for prostate, bladder, and testicular cancer patients commonly causes hair loss, fatigue, and decreased appetite.
116 citations
,
September 2001 in “Journal of The American Academy of Dermatology” Hair loss occurs due to fewer papillary cells, smaller follicles, and shorter growth phases.
58 citations
,
November 2012 in “PLoS ONE” Human skin cells can be turned into versatile stem cells, but their ability to do so decreases with repeated use.
45 citations
,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
27 citations
,
September 1999 in “Journal of Investigative Dermatology” Human skin cells contain Protease Nexin-1, and male hormones can decrease its levels, potentially affecting hair growth.
17 citations
,
February 2013 in “PLOS ONE” 6-Gingerol, found in ginger, may slow down hair growth and could be used for hair removal.
15 citations
,
February 2019 in “Journal of clinical medicine” Atorvastatin reversed memory problems caused by cancer drug trastuzumab and improved its cancer-fighting abilities without causing hair loss.
8 citations
,
October 2014 in “Journal of analytical toxicology.” Chemical hair straightening significantly reduces detectable drug levels in hair.
5 citations
,
October 2021 in “Indian Journal of Plastic Surgery” Semiconical blades and coronal slits minimize vascular damage in hair transplants.
2 citations
,
November 1995 in “American Journal of Obstetrics and Gynecology” Taking vitamin B6 corrected a pregnant woman's metabolic disorder, which changed her hair color.
1 citations
,
September 2016 in “Actas Dermo-Sifiliográficas” 5-alpha reductase inhibitors may cause sexual side effects, breast complications, and other health risks in men with hair loss.