22 citations,
January 2015 in “Dermatology Research and Practice” An extra-strength marine protein supplement helped increase hair growth and decrease hair shedding in women with thinning hair.
May 2021 in “Journal of the Endocrine Society” A patient produced cortisol after adrenalectomy, possibly due to residual tissue or other body parts making steroids.
November 2007 in “Neuro-chirurgie/Neurochirurgie” Cyproterone acetate is a safe treatment that causes mild feminizing effects and is more effective with added estrogens.
August 1994 in “Journal of dermatological science” Different substances affect hair and skin cell growth in various ways.
4 citations,
September 2012 in “PubMed” 
1 citations,
October 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Printing human stem cells and a special matrix during surgery can help grow new skin and hair-like structures in rats.
48 citations,
February 2013 in “Molecular and Cellular Endocrinology” The protein StAR is found in 17 different organs and can affect hair loss and brain functions, but its full role is not yet fully understood.
9 citations,
April 2020 in “Journal of dermatology” A person with a specific gene mutation had extra teeth, unique jaw and hair features not seen before in this condition.
3 citations,
July 2011 in “Hair transplant forum international” Extra safety steps are needed for older patients and those with heart disease having hair restoration surgery.
December 2017 in “Jurnal Farmanesia” Red Palm Oil promotes hair growth more effectively than Extra Virgin Olive Oil.
15 citations,
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” Mice with extra human KLK14 had hair and skin problems, including weaker cell bonds and inflammation, linked to Netherton syndrome.
5 citations,
December 2018 in “Annals of plastic surgery” Some burn patients grew extra hair in areas treated with pressure garments or silicone.
5 citations,
June 2014 in “Pediatric dermatology” A baby girl grew extra hair from contact with her grandfather's hair medicine, but it went away after stopping exposure.
5 citations,
March 1981 in “PubMed” A girl grew extra hair in areas where she had insect bites.
4 citations,
January 2011 in “Dermatology” A patient grew extra hair on their ears after treatment for testicular cancer, possibly due to hormonal changes or genetics.
3 citations,
March 2018 in “Pediatric Dermatology” Two children grew extra hair from taking omeprazole, which went away after they stopped the medication.
15 citations,
December 2019 in “Aesthetic Surgery Journal” Most insurance companies do not cover extra gender-affirming surgeries, with coverage being low and inconsistent.
15 citations,
May 2011 in “Veterinary Dermatology” Vitamin A might be a safe extra treatment for dogs with sebaceous adenitis, but more research is needed to prove its effectiveness.
4 citations,
January 2007 in “Indian Journal of Dermatology” Body hair can be used as an extra source of donor hair in hair restoration surgery for people with severe hair loss.
3 citations,
May 2020 in “JAAD Case Reports” Two patients with psoriasis grew extra hair after using certain psoriasis medications.
3 citations,
January 2016 in “Case reports in dermatological medicine” An 80-year-old man grew extra hair on his forearms after starting Alzheimer's medication rivastigmine.
January 2015 in “Annals of dermatology/Annals of Dermatology” Using travoprost for glaucoma may cause extra hair growth and darker skin around the eyes, but these effects can reverse after stopping the drug.
21 citations,
January 2005 in “Pediatric Dermatology” An 8-year-old girl with vitiligo developed extra hair growth on her knee after using tacrolimus ointment.
10 citations,
March 1990 in “The Journal of Dermatology” Long-term etretinate use may cause delayed wound healing and extra tissue growth after injury.
8 citations,
September 2016 in “Pediatric dermatology” People with Mucopolysaccharidoses often have skin problems like thick skin and extra hair, and recognizing these can help diagnose and treat the condition early.
7 citations,
January 2007 in “Elsevier eBooks” Shampoos clean hair mainly with surfactants and have added ingredients for extra benefits.
4 citations,
January 2016 in “The Turkish Journal of Pediatrics” A 5-year-old girl got a rare case of extra hair growth on her arm after a henna tattoo.
January 2024 in “Journal of the Endocrine Society” The research found that measuring androgens in urine can give extra information about body metabolism and is linked to androgen levels in the blood, especially in young girls.
Dutasteride is more effective than finasteride for treating BPH without extra safety risks.
71 citations,
March 1995 in “Journal of The American Academy of Dermatology” Using both vertical and transverse sections for alopecia biopsies improves diagnosis without extra cost.