May 2012 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Prostaglandin D2, found in higher levels in bald scalps, stops hair growth, suggesting that blocking its receptor could potentially treat hair loss.
9 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Sex hormones and antiandrogens can either stimulate or inhibit human hair follicle cell growth depending on the dose.
July 2007 in “Hair transplant forum international” Hair restoration procedures have become 34% more popular worldwide since 2004.
August 2019 in “Aesthetic Surgery Journal” PRP can boost hair growth and thickness, especially in early stages of hair loss, but its effectiveness varies and there's no set method or treatment frequency. Stem cells also show promise for increasing hair density.
40 citations
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May 2018 in “PubMed” Nutrafol® Women's Capsules safely and effectively promote hair growth in women with thinning hair.
8 citations
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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.
3 citations
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January 2019 in “DOAJ (DOAJ: Directory of Open Access Journals)” Pumpkin seed oil may help hair grow and could be an alternative treatment for male hair loss.
February 2026 in “International Journal of Molecular Sciences” Muscarinic acetylcholine receptors in skin cells help regulate and promote hair growth.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” A PTH-based treatment improved hair regrowth better than ruxolitinib in a mouse model of hair loss.
April 2023 in “Journal of Investigative Dermatology” IL-9/IL-9R signaling can negatively affect human hair growth and may be a target for treating hair loss conditions.