August 2025 in “Journal of Applied Pharmaceutical Research” F4 and F6 hair gels showed promise for improving hair care but need more testing.
Mealworm protein helps fat cell development and may aid in metabolic health and hair growth.
October 2021 in “Journal of Investigative Dermatology” Dkk4 protein is necessary for the proper development and arrangement of hair follicles.
26 citations
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September 1999 in “Canadian Journal of Botany” The RHD4 gene is crucial for consistent root hair growth in Arabidopsis thaliana.
2 citations
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October 2018 in “Archives of Dermatological Research” Tofacitinib helps mice grow more hair by increasing noggin and BMP4 levels, possibly better than minoxidil.
83 citations
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April 1992 in “Journal of Biological Chemistry” Four-amino acid part makes enzyme sensitive to finasteride.
October 2002 in “Dermatologic Surgery” 4 citations
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May 2022 in “Genes & Diseases” 
November 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” 4-aminopyridine helps skin wounds heal faster and better.
March 2022 in “Research Square (Research Square)” 4-aminopyridine, a FDA-approved drug, speeds up skin wound healing and tissue regeneration.
4 citations
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August 2023 in “Biomedicine & Pharmacotherapy” Ivacaftor can protect against noise-induced hearing loss by reducing oxidative stress.
3 citations
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March 2020 in “International Journal of Molecular Sciences” Thymosin β4 helps increase hair growth in Cashmere goats.
252 citations
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March 1998 in “Developmental dynamics” FGFs-4, -8, and -9 have overlapping roles and are repeatedly used in tooth development.
October 2024 in “Skin Appendage Disorders” Higher FABP4 levels may indicate more severe alopecia areata.
13 citations
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November 2012 in “PLoS ONE” A gene mutation in mice causes severe skin disorder similar to a human condition.
November 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Scientists made a mouse that shows how a specific protein in the skin changes and affects hair growth and shape.
92 citations
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May 2004 in “Journal of Investigative Dermatology” 
August 2019 in “Journal of Invertebrate Pathology” Thymosin beta 4 protects cells from damage by blocking a harmful microRNA and boosting a protective gene.
November 2025 in “Frontiers in Pharmacology” Xiaozhi Yufa decoction may help treat hair loss by improving hair growth and reducing inflammation.
1 citations
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August 2022 in “International journal of women’s dermatology” Botox injections may be a safe and effective way to treat severe, itchy skin disease when other treatments fail.
September 2017 in “Journal of Investigative Dermatology” Mackerel fermented fish oil protects skin cells from damage by UVB light.
December 1998 in “福井大学教育学部紀要 第4部 教育科学” HA-P5 effectively treats acne without causing side effects seen in other treatments.
July 2022 in “Journal of Investigative Dermatology” Dkk4 is necessary for the initial development and arrangement of hair follicles.
10 citations
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June 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” FP-1 is a key protein in rat hair growth, active only during the growth phase.
July 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” A new Wnt surrogate specifically targets the Frizzled7 receptor, promoting organoid formation and hair growth.
1 citations
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May 2021 in “Annals of the rheumatic diseases” Tofacitinib is a promising treatment for children with rheumatic diseases.
July 2024 in “Journal of Investigative Dermatology” PP405 may help hair growth by activating hair follicle stem cells.
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.
December 2024 in “Stem Cell Research & Therapy” ZO-1 helps hair follicle stem cells renew better by changing their structure.