August 2022 in “DOAJ (DOAJ: Directory of Open Access Journals)” 0.5 mm microneedling with minoxidil effectively and safely treats male hair loss.
January 2016 in “대한피부과학회지” A 0.5 mm microneedle depth is more effective for increasing hair density in treating hair loss.
January 2019 in “Prosiding Program Kreativitas Mahasiswa” A 15% pea extract hair tonic effectively promotes hair growth and combats hair loss.
April 2024 in “Dermatologic surgery” Microneedling at a depth of 0.5 mm is the most effective single treatment for hair loss among the tested depths.
January 2025 in “Conservation Physiology” Bear hair grows 0.10 to 1.05 mm per day, varying by individual and season.
Light fraction patchouli oil at 1.5% effectively treats dandruff and promotes hair growth.
March 2021 in “Indian Journal of Dermatology” A man unhappy with his old hair restoration got a new, natural-looking hairline using a combination of follicular unit extraction and punch graft reduction.
November 2025 in “Andalas University eThesis (Andalas University)” Rosemary extract hair tonic is a safe and effective natural alternative for promoting hair growth.
August 2021 in “Journal of Fundamental and Applied Pharmaceutical Science” Black tea extract at 5% concentration promotes the most hair growth.
December 2021 in “Jurnal ilmiah Manuntung” The best hair growth results were achieved with a hair tonic containing 5% gotu kola extract and 0.04% garlic extract.
198 citations
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March 1999 in “Journal of Investigative Dermatology” Keratin 15 helps maintain tissue integrity and is reduced in activated keratinocytes.
78 citations
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October 2020 in “Experimental Dermatology” Hidradenitis suppurativa is caused by genetic factors, inflammation, bacteria, hormones, and lifestyle factors like obesity and smoking.
2 citations
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February 2021 in “Endocrinology, diabetes & metabolism case reports” A teenage girl had both a rare ovarian tumor and a severe form of polycystic ovarian syndrome.
1 citations
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December 2019 in “Clinical ophthalmology” Bimatoprost eye drops make rabbit eyelashes longer, thicker, and darker, and increase the number of lashes without causing inflammation.
March 2025 in “Journal of Cosmetic Dermatology” Botulinum toxin type A may widen certain arteries, but more research is needed.
1 citations
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January 2009 in “The Korean Society of Beauty and Art” Korean Wild Ginseng extract may increase hair thickness and satisfaction among users, but not significantly increase hair count.
28 citations
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January 1985 in “Journal of the American Academy of Dermatology” A girl with citrullinemia developed pili torti, suggesting a link between the hair condition and the metabolic disorder.
12 citations
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March 2023 in “Processes” Plant surfactants from quinoa and soybeans are effective, safe, and eco-friendly for shampoos.
21 citations
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April 1990 in “Journal of comparative neurology” The study found that nerve signals are stronger when there are more connection points, but not necessarily denser, along the nerve's path in the spine.
47 citations
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July 1967 in “Science” Not eating enough protein can cause hair roots to shrink and lose color, and hair to become thinner.
10 citations
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January 2020 in “Acta Neurobiologiae Experimentalis” Valproic acid and crocin together boost cell growth and may help treat nerve injuries.
2 citations
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December 2021 in “Pharmaceutics” Finasteride-loaded proniosomes effectively promote hair growth in mice.
14 citations
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March 2019 in “Plant methods” The new microrhizotron tool effectively observes and measures pepper plant roots non-destructively.
February 2024 in “Journal of Cosmetic Dermatology” Using a laser with bimatoprost solution works better for hair regrowth in alopecia areata than bimatoprost alone.
3 citations
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September 1994 in “Indian Journal of Dermatology, Venereology and Leprology” Hair loss in women was often caused by stress, illness, childbirth, or low hemoglobin, with most cases being telogen effluvium.
58 citations
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June 2006 in “Plastic and Reconstructive Surgery” Mice healed without scars as fetuses but developed scars as adults, suggesting scarless healing might be replicated with further research.
September 2024 in “Journal of the American Academy of Dermatology” A new type of alopecia areata, called the "confetti variant," causes small bald spots that often heal on their own in a few months.
Four bacteria from the lab were found to be resistant to selenium.
4 citations
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June 2018 in “Journal of Cosmetic Dermatology” The new A-design punch for hair restoration surgery may lead to smaller scars compared to other types.
6 citations
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January 2016 in “JAMA Dermatology” Dirty dots are a common scalp finding in elderly women and can be washed away with shampoo.