June 2025 in “Clinical and Experimental Dermatology” A 76-year-old man's grey hair turned back to its original color after radiotherapy.
November 2022 in “Journal of Investigative Dermatology” Minoxidil and PRP can help convert miniaturized hair follicles back to normal in male pattern baldness.
7 citations
,
January 2017 in “Biological & Pharmaceutical Bulletin” Certain compounds from Panax ginseng can block proteins that affect hair growth, potentially helping treat hair loss.
12 citations
,
November 1945 in “Archives of dermatology” Transplanted skin on hooded rats often grows white hair instead of black.
8 citations
,
April 2014 in “Anti-Cancer Drugs” A hormone linked to collagen helps hair grow back in mice after chemotherapy, and may also prevent bone loss.
1 citations
,
January 2023 in “SAGE open medical case reports” A new treatment called deucravacitinib helped a patient with severe hair loss grow their hair back quickly.
May 2023 in “Frontiers in chemistry” Zolpidem shows up in hair from the top back of the head after one dose and fades over time, suggesting it gets into hair through blood and sweat.
December 2025 in “International Journal of Research in Dermatology” The Ayurvedic treatment safely and effectively restores natural hair color by increasing black hair and reducing grey hair.
236 citations
,
April 2015 in “Cell” Plucking some hairs can trigger nearby unplucked hairs to grow back more due to a collective response.
April 2023 in “Pharmacognosy Magazine” Cerasus serrulata flower extracts can help turn grey hair black again.
62 citations
,
December 1966 in “Endocrinology” Injecting α-MSH made mice's hair turn black.
June 2025 in “BMJ Case Reports” Axitinib treatment turned a man's grey hair back to black.
77 citations
,
January 1993 in “Skin Pharmacology and Physiology” Steroids stop hair growth temporarily but don't block the signals that start it.
November 2023 in “Cell Biology International” Tiny particles from umbilical cord stem cells may help hair grow back in a type of hair loss.
January 2025 in “Journal of Materials Chemistry B” A new treatment using special microneedles and a nitric oxide-releasing drug could improve hair growth and be more convenient for people with hair loss.
January 2018 in “Journal of Cosmetics, Dermatological Sciences and Applications” Hair transplant surgery can successfully treat hair loss at the back of the neck.
December 2015 in “Journal of skin and stem cell” Using a gel called Diclofenac can potentially cause hair to grow back in bald spots in older men.
1 citations
,
January 2007 in “中国科学通报:英文版” Women's hair has more sulfur, and black hair has more calcium than white hair.
September 2023 in “Clinical, Cosmetic and Investigational Dermatology” About one-third of Saudi women with female pattern hair loss also have thinning hair at the back of their head.
January 2003 in “Research Portal (King's College London)” Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.
13 citations
,
June 2021 in “Carcinogenesis” Certain hair straighteners and dyes may increase ovarian cancer risk, especially in African American/Black women.
1 citations
,
October 1993 in “PEDIATRICS” Using hot curling irons and hair gels can cause seizures in young black girls during hair grooming.
3 citations
,
December 2013 in “American Journal of Dermatopathology” A rare skin growth in a baby was successfully removed without coming back.
3 citations
,
June 2002 in “Transgenic Research” Scientists made a mouse that can be made to lose hair and then grow it back.
January 2026 in “Journal of Dermatology Research and Therapy” Combination therapy effectively regrows hair and reduces severity in Black children with stubborn Alopecia Areata.
June 2024 in “Skin Research and Technology” Severe male pattern hair loss is linked to lower hair density in the back of the head.
September 2022 in “Journal of Case Reports and Medical History” Many new moms lose hair after childbirth due to hormonal changes, but it usually grows back within a year.
Rapid weight loss can cause temporary hair loss, but hair usually grows back.
22 citations
,
September 2014 in “Veterinary Dermatology” Low-level laser therapy seems to help dogs with noninflammatory alopecia grow hair back.
51 citations
,
September 2020 in “Cell Metabolism” Glutamine metabolism affects hair stem cell maintenance and their ability to change back to stem cells.