August 2016 in “Journal of Investigative Dermatology” Zinc deficiency disrupts hair growth and cycle, but zinc supplements can fix this.
October 2021 in “Journal of Investigative Dermatology” Poor blood supply in hair follicles is linked to nutrient deficiency in patients with female pattern hair loss, and adding more nutrients could potentially fix this.
March 2021 in “World rabbit science” Adding 0.2% taurine to Angora rabbits' diet improves wool production and overall health.
14 citations
,
August 2016 in “Journal of nanomedicine research” Zinc oxide nanoparticle biscuits improved growth and health in zinc-deficient rats without toxicity.
January 2025 in “MEDS Public Health and Preventive Medicine” Spermidine supplements can help extend the hair growth phase and may be useful for treating hair loss.
Lasers and energy-based devices effectively and safely improve hair growth in androgenetic alopecia, especially when combined with other treatments.
Lasers and energy-based devices effectively and safely improve hair growth in androgenetic alopecia, especially when combined with other treatments.
Restolin Hair Supplement may help hair growth but lacks FDA approval and clinical trial evidence.
47 citations
,
December 2006 in “Therapy” The dietary supplement helped increase hair growth in women with hair loss.
The serum improved hair growth and comfort after hair transplant.
69 citations
,
August 2016 in “PubMed” High stress can disrupt hair growth, but certain supplements might help.
December 2025 in “International Journal of Clinical Medical Research” Diet and gut health can improve skin, hair, and nails.
8 citations
,
October 2017 in “Dermatology practical & conceptual” A spermidine-based supplement may help hair grow longer by keeping it in the growth phase.
2 citations
,
January 2020 Certain dietary supplements can improve hair health.
February 2024 in “Animals” Giving selenium yeast to pregnant goats leads to better hair growth and cashmere quality in their babies.
February 2026 in “Aesthetic Cosmetology and Medicine” The treatment improved hair density and condition without side effects.
June 2023 in “Skin Research and Technology” The supplement with amino acids, iron, selenium, and marine hydrolyzed collagen improved hair growth more than drug treatment alone, with most people tolerating it well.
March 2024 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Soy hull supplement does not affect sheep and lamb growth or reproductive performance compared to corn-based supplements.
3 citations
,
January 2017 in “Journal of cosmetology & trichology” The food supplement with L-cystine, Serenoa repens extract, and biotin safely reduced hair loss and improved hair growth in men and women.
26 citations
,
May 1984 in “Journal of Parenteral and Enteral Nutrition” Biotin supplements restored hair and resolved symptoms in a woman with biotin deficiency.
January 2023 in “Voennaâ medicina” Hair loss in women can improve with iron and vitamin supplements if caused by iron deficiency.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” The treatment improved hair density and scalp coverage in an elderly woman with hair loss.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” The treatment improved hair density and scalp coverage in an elderly woman with hair loss.
82 citations
,
August 2017 in “Cell Reports” An imbalanced gut and lack of biotin can cause hair loss in mice.
74 citations
,
August 2006 in “Journal of clinical gastroenterology” Shen-Min, a hair growth supplement, likely caused acute hepatitis in a woman, improving after she stopped taking it.
18 citations
,
May 2010 in “Zentralblatt für Veterinärmedizin Reihe A” Hair zinc levels don't reliably indicate overall zinc status in animals.
6 citations
,
September 1996 in “Journal of the European Academy of Dermatology and Venereology” Biotin supplements may help hair regrowth in alopecia areata patients with low biotinidase activity.
2 citations
,
February 2023 in “International journal of molecular sciences” Tetrathiomolybdate reduces hair growth marker in skin cells by boosting harmful oxygen molecules, but effects can be reversed.
2 citations
,
April 2017 in “Plastic and Aesthetic Nursing” Platelet-rich plasma therapy shows promise for hair regrowth in alopecia patients.
1 citations
,
June 2018 in “Ukrainian Journal of Dermatology Venerology Cosmetology” Oral collagen improves skin, nails, hair, and reduces cellulite.