28 citations
,
March 1942 in “Journal of Endocrinology” Male rats grow hair faster than females, and certain hormones can slow or slightly increase hair growth, but not significantly beyond natural rates.
8 citations
,
March 1942 in “Journal of Endocrinology” Thyroid hormone treatments help thyroidectomized rats grow normally.
1 citations
,
February 2023 in “Drug Design Development and Therapy” Plant adaptogens may help treat skin diseases and improve skin health, but more research is needed to fully understand how they work.
6 citations
,
October 1989 in “PubMed” Optimized conditions and specific treatments enhance the growth of hair cells from C3H mice.
November 2022 in “Journal of Investigative Dermatology” DermaCult™ Keratinocyte Expansion Medium allows human skin cells to grow longer while keeping their ability to develop properly.
2 citations
,
August 2017 in “Experimental Dermatology” A human serum-enriched medium effectively supports melanocyte growth and activity without using animal-derived supplements.
101 citations
,
January 2014 in “Journal of Visualized Experiments” The method effectively measures long-term stress levels using hair samples.
September 2024 in “Digital Commons - University of South Florida (University of South Florida)” Hormones can change ptarmigan feather color from white to pigmented.
October 2025 in “International Journal of Innovative Research in Technology” Certain natural ingredients and lifestyle changes can help manage PCOS symptoms by balancing hormones and improving insulin sensitivity.
49 citations
,
October 2017 in “Nutrients” Equisetum debile extract, especially the ethyl acetate type, may be a promising natural ingredient for anti-hair loss products.
36 citations
,
February 2017 in “BMC Complementary and Alternative Medicine” Geranium sibiricum extract helps hair grow and is more effective than minoxidil but can be toxic in high concentrations.
16 citations
,
October 2019 in “Biological & Pharmaceutical Bulletin” Houttuynia cordata extract may help hair grow by improving cell survival and increasing cell growth.
15 citations
,
May 2020 in “BMC complementary medicine and therapies” Polygonum multiflorum extract helps hair grow longer and fights the effects of hormones that cause hair loss.
4 citations
,
September 2020 in “Andrologia” Oregano extract helps fix testis and sperm damage caused by finasteride.
2 citations
,
August 2019 in “Asian journal of pharmaceutical and clinical research” Cinnamon bark extract may help prevent weight loss and hair loss in breast cancer patients during chemotherapy and is safe to use.
39 citations
,
December 2013 in “Phytotherapy Research” Safflower (Carthamus tinctorius) extract helps hair grow and could be used in hair products.
Glycyrrhizic acid and licorice extract can significantly reduce unwanted hair growth.
49 citations
,
November 2014 in “Journal of Medicinal Food” Red Ginseng Extract may help human hair grow by activating growth pathways and blocking negative effects of certain hormones.
6 citations
,
October 2019 in “Jo'jig gonghag gwa jaesaeng uihag/Tissue engineering and regenerative medicine” Rice bran extract boosts melanin production in hair follicles.
5 citations
,
December 2015 in “Asian pacific Journal of Tropical Biomedicine” Phthirusa pyrifolia extract may lower testosterone and harm male rat reproduction without damaging the liver or kidneys.
1 citations
,
July 2022 in “Han'gug sigpum yeong'yang gwahag hoeji/Journal of the Korean society of food science and nutrition” Eurycoma longifolia extract may help increase testosterone levels and reduce andropause symptoms.
11 citations
,
October 2015 in “Clinical and Experimental Dermatology” Sophora flavescens extract helps hair growth and treats hair loss.
14 citations
,
July 2021 in “Biomolecules” Centipeda minima extract helps hair grow by activating important growth signals and could be a promising hair loss treatment.
2 citations
,
January 2025 in “Pharmaceutical Research” Angelica gigas Nakai root extracts may help with cancer, pain, memory loss, and metabolic issues.
August 1994 in “Molecular Endocrinology” Changing protein kinase levels in pituitary cells affects calcium flow and beta-endorphin release.
April 2023 in “Journal of Investigative Dermatology” Ganoderma lucidum extract can potentially reduce stress-induced hair loss by slowing down premature hair aging and removing harmful substances.
Collagen CLR and placenta extract may help treat diffuse hair loss.
26 citations
,
November 2002 in “Planta medica” Extracts from Cercidiphyllum japonicum wood can stimulate mouse hair cell growth like common hair growth treatments.
14 citations
,
June 2001 in “Endocrinology” Prolactin affects when mice shed and grow hair.
April 2022 in “Molecules” Teak leaf extract contains compounds that could help treat hair loss.