Neuropeptides affect hair growth and could be used to control it.
January 2026 in “International Journal of Biological Macromolecules” Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.
211 citations
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February 1994 in “Proceedings of the National Academy of Sciences” Too much parathyroid hormone-related protein in skin disrupts hair growth in mice.
January 2024 in “Journal of Cosmetics, Dermatological Sciences and Applications” Injecting a peptide-hyaluronic acid mix improved hair growth in men with hair loss and was safe.
July 2024 in “Journal of Investigative Dermatology” Bioactive peptides improve graft survival and new hair growth.
Keratin peptides in hair may help identify gender and ethnicity, but more research is needed.
16 citations
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January 2017 in “Physical chemistry chemical physics/PCCP. Physical chemistry chemical physics” The 3D structure of a key hair protein was modeled, revealing specific helical structures and stabilization features.
11 citations
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January 2015 in “Skin pharmacology and physiology” Eating collagen peptides may help with skin and hair growth.
9 citations
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July 2014 in “Experimental Dermatology” PTHRP agonists can stimulate hair growth, especially in damaged follicles, while antagonists may initially increase growth but ultimately inhibit it.
12 citations
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April 2019 in “Scientific Reports” A protein called HMGB1 helps hair grow by affecting prostaglandin metabolism.
July 2022 in “Journal of Investigative Dermatology” The combination of a plant extract and a peptide can increase hair pigmentation and may reverse greying.
47 citations
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January 2017 in “RSC Advances” Keratin peptides can change hair shape gently without harsh chemicals.
36 citations
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March 2014 in “Biomaterials” A new skin-whitening agent using a peptide from wheat is safe and effective at reducing skin pigmentation.
April 2018 in “Journal of Investigative Dermatology” A new peptide, FOL-005, may help treat excessive hair growth by reducing a hair growth promoter, FGF7.
May 2017 in “bioRxiv (Cold Spring Harbor Laboratory)” The peach gene pCTG134 helps control the interaction between auxin and ethylene hormones during fruit ripening.
9 citations
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August 2018 in “Biomedical dermatology” A peptide called DPS-1 helps human scalp cells grow and stimulates hair growth in mice.
Collagen peptides may boost skin and hair-related gene expression.
22 citations
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January 2020 in “PeerJ” Keratin peptides in hair might help identify gender and ethnicity.
April 2016 in “Journal of Investigative Dermatology” Boosting HGF signaling could improve the creation of hair follicles in lab-made skin.
Certain short peptides can increase root hair growth in tobacco plants.
A new peptide, murikal/SPR4, was found to significantly increase hair growth in mice, and its liposomal topical formulations enhanced hair growth more than commercial products. However, results on human scalp skin were unclear, needing more tests.
10 citations
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February 2013 in “British Journal of Dermatology” Thyrotropin-releasing hormone may help control skin and hair growth and could aid in treating related disorders.
Self-assembling peptide hydrogels effectively deliver drugs locally, enhancing treatment and reducing side effects.
January 2026 in “Biomacromolecules” A new topical method using peptides boosts hair growth effectively with less finasteride and fewer side effects.
219 citations
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July 1995 in “PubMed” Keratinocyte growth factor promotes hair growth and reduces hair loss from chemotherapy.
72 citations
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October 2009 in “The FASEB journal” TRH stimulates human hair growth and extends the hair growth phase.
March 2016 in “Institutional Repositories DataBase (IRDB)” Collagen peptides may promote hair growth by activating certain genes in the skin.
7 citations
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July 2019 in “International Journal of Molecular Sciences” PGA-4HGF may help treat hair loss by activating hair growth pathways and extending the hair growth phase.
6 citations
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February 2023 in “Journal of nanobiotechnology” The new anti-acne treatment HA-P5 effectively reduces acne by targeting two key receptors and avoids an enzyme that can hinder treatment.
July 2024 in “Experimental Dermatology” AP collagen peptides help hair grow and improve hair health.