September 2017 in “Journal of Investigative Dermatology” Hair follicle cells change their DNA packaging during growth cycles and when grown in the lab.
September 2017 in “Journal of Investigative Dermatology” Blue light helps hair growth by affecting specific proteins in hair follicle cells.
January 2016 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” IGF-I helps hair growth by preventing cell death and boosting growth factors.
January 2012 in “Journal of Natural Remedies” The Abrus precatorius extract can effectively promote hair growth similar to standard treatments.
DHT, not testosterone, mainly affects hair growth and related conditions.
August 2025 in “Journal of the Korean Society of Cosmetology” Gymnema sylvestre leaf extract can slow hair growth.
November 2021 in “CRC Press eBooks” Anagen effluvium is a reversible condition causing sudden hair loss, often due to chemotherapy or head radiation.
February 2014 in “PubMed” Tomato extract can promote hair growth and prevent hair loss without irritating the skin.
April 2023 in “Journal of Investigative Dermatology” Exosomes from certain stem cells can fight hair loss by promoting hair growth and maintaining the growth phase of hair.
69 citations
,
May 1997 in “Veterinary Pathology” The angora mouse mutation causes long hair and hair defects due to a gene deletion.
61 citations
,
January 2011 in “PloS one” Notch signaling is essential for healthy skin and hair follicle maintenance.
53 citations
,
April 1985 in “Developmental Biology” Fibronectin and other basement membrane components increase during hair growth and decrease during rest.
39 citations
,
December 2013 in “Phytotherapy Research” Safflower (Carthamus tinctorius) extract helps hair grow and could be used in hair products.
33 citations
,
September 1990 in “Proceedings of the National Academy of Sciences” The study showed that a specific DNA sequence can control gene expression in hair growth areas of mice.
32 citations
,
December 1969 in “The Lancet” Children with marasmus have more resting hair follicles and thinner, less pigmented hair, showing long-term malnutrition.
30 citations
,
December 2018 in “Trends in Endocrinology and Metabolism” Both immature and mature fat cells are important for hair growth cycles, with immature cells promoting growth and mature cells possibly inhibiting it.
29 citations
,
July 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzymes Aldh1a2 and Aldh1a3 are involved in making retinoic acid in hair follicles and have different roles in hair growth.
28 citations
,
August 2018 in “BMC genomics” DNA methylation changes are linked to hair growth cycles in goats.
27 citations
,
February 2017 in “Biomedicine & Pharmacotherapy” White wax and policosanol from white wax effectively reduced hair loss and promoted hair growth in mice better than a known hair growth drug.
24 citations
,
June 1999 in “Mechanisms of Development” Ornithine decarboxylase is crucial for hair growth and follicle development.
24 citations
,
July 1987 in “Dermatologic Clinics” Systemic diseases can cause hair loss, which is often reversible with treatment.
22 citations
,
February 2002 in “Journal of theoretical biology” The model showed that randomness accurately describes individual hair growth cycles and that synchronization can cause large fluctuations not seen in humans.
21 citations
,
May 2016 in “Experimental and Therapeutic Medicine” MMP-2 and MMP-9 help hair grow, while their inhibitors peak when hair growth slows.
19 citations
,
April 2020 in “Journal of ethnopharmacology” Prunus mira nut oil helps hair grow by affecting the Wnt/β-catenin signaling pathway.
18 citations
,
January 2023 in “Nano Research” Red OLED therapy significantly boosts hair growth.
18 citations
,
November 2014 in “Journal of Agricultural and Food Chemistry” Brazilian propolis was found to speed up hair growth in mice by increasing the growth of skin cells that form hair.
18 citations
,
January 2007 in “Pharmaceutical Biology” Citrullus colocynthis extract is effective for hair growth, comparable to minoxidil.
18 citations
,
January 1994 in “Skin Pharmacology and Physiology” Androgens shorten hair growth phases, causing finer hair and more severe hair loss in men.
16 citations
,
January 2012 in “Asian pacific Journal of Tropical Biomedicine” The herbal cream was found to be a safe and effective alternative for hair growth, similar to minoxidil.
14 citations
,
July 2017 in “Fitoterapia” Oleanolic acid promotes hair growth by increasing cell proliferation through the Wnt/β-catenin pathway.