Collagen supplements may improve skin, hair, and nails, but more research is needed.
35 citations
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September 2009 in “Development” Necl2 affects skin cell behavior and slows wound healing.
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December 2025 in “Gels” Nano-zinc oxide affects genes linked to cell death, inflammation, and stress in skin cells.
September 2016 in “Journal of Dermatological Science” Certain factors can start hair growth in adult skin by making cells communicate and form new hair follicles.
119 citations
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November 1969 in “Journal of Ultrastructure Research” Macrophages help break down collagen around hair follicles during hair growth.
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January 2012 in “Journal of Tissue Science & Engineering” Collagen membranes improve melanocyte growth for treating skin depigmentation.
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September 2016 in “International Journal of Molecular Sciences” Polydeoxyribonucleotide (PDRN) may help lighten skin and treat hyperpigmentation.
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December 2019 in “Electronic Journal of General Medicine” Combining microfocused ultrasound with PRP-therapy improves skin quality and patient satisfaction more than ultrasound alone.
1 citations
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January 2022 in “Pharmaceutical Sciences Asia” Microneedles offer a painless, effective way to deliver drugs through the skin.
Using microneedling with PRP improves skin and hair conditions more than microneedling alone.
February 2026 in “Plastic and Aesthetic Research” Regenerative aesthetic medicine aims to restore tissue function, but needs more consistent evidence and standardized practices.
August 2024 in “International Journal of Science and Research (IJSR)” PDO threads are effective and safe for non-surgical hair restoration.
1 citations
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January 2020 in “VTechWorks (Virginia Tech)” αCT1 improves scar appearance by changing early collagen structure.
June 2025 in “OPAL (Open@LaTrobe) (La Trobe University)” The RHC complex with nicotinamide promotes hair growth and health.
Collagen gel contraction in hair follicle culture is mainly influenced by the amounts of collagen, dermal papilla cells, and epithelium cells.
Collagen peptides may help maintain hair growth and could be beneficial for hair loss conditions.
87 citations
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October 1987 in “Journal of Investigative Dermatology” 10 citations
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January 2009 Collagen XVIII affects wound healing, hair growth, and bone development, with its absence speeding up processes and overexpression causing delays and abnormalities.
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Regenerative cosmetics can improve skin and hair by reducing wrinkles, healing wounds, and promoting hair growth.
January 2017 in “OPAL (Open@LaTrobe) (La Trobe University)” Collagen peptides may boost skin and hair-related gene expression.
March 2024 in “Advanced healthcare materials/Advanced Healthcare Materials” Scientists developed a new way to create skin-like structures from stem cells using a special 3D gel and a device that improves cell organization and increases hair growth.
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June 2018 in “Ukrainian Journal of Dermatology Venerology Cosmetology” Oral collagen improves skin, nails, hair, and reduces cellulite.
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November 2023 in “Journal of Investigative Dermatology” Microthermal wounds heal with less scarring due to delayed collagen production and minimal inflammation.
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May 2017 in “Journal of The European Academy of Dermatology and Venereology” Scalp threading with polydioxanone threads is a promising, effective, and safe method for hair regrowth.
June 2017 in “Journal of the American Academy of Dermatology” Tofacitinib is effective and safe for treating severe alopecia areata and related conditions.
September 2016 in “Journal of Dermatological Science” Protein extract from embryonic skin can create new hair follicles in adult life, primarily through effects on fibroblasts.
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November 1990 in “The Journal of Dermatology” Dermal papillae enhance hair follicle growth and structure.
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November 1959 in “Annals of the New York Academy of Sciences” Human hair follicles can grow back.