This review reports that oral collagen peptide supplements may improve skin elasticity, hydration, and wrinkle appearance while also supporting hair and nail health and wound healing, but emphasizes the need for longer, high-quality studies due to current research limitations and variability in findings.
8 citations
,
February 2020 in “Journal of Drug Delivery Science and Technology” This study demonstrated that using PLGA nanoparticles to deliver chlorogenic acid significantly increased type 17 collagen production in human epidermal cells, indicating potential for improved skincare formulations.
18 citations
,
January 2000 in “Journal of Adhesion Science and Technology” This research found that immobilizing type I atelocollagen onto artificial hair significantly improved the adhesion and long-term fixation of the hairs in the human scalp, indicating high biosafety and enhanced tissue integration.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that apocynin restored COL17A1 expression in human keratinocytes and reduced UVB-induced cellular senescence, DNA damage, and cell cycle arrest.
299 citations
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January 2018 in “Journal of Clinical Investigation” This review explores fibroblast heterogeneity in the mammalian dermis and suggests potential therapeutic applications by targeting fibroblast subtypes, but reports no new experimental results.
27 citations
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April 1992 in “Biochemical Journal” Minoxidil reduces lysine hydroxylase in skin cells.
21 citations
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September 2001 in “Graefes Archive for Clinical and Experimental Ophthalmology” This study found that minoxidil inhibited lens epithelial cell migration, proliferation, and collagen secretion in vitro, suggesting it may help prevent postoperative capsular opacification.
12 citations
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May 2001 in “British journal of dermatology/British journal of dermatology, Supplement” A rare benign skin tumor showed unusual features of sebaceous and sweat glands, important for correct diagnosis.
20 citations
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July 1987 in “Development Genes and Evolution” January 1993 in “Di-Si Junyi Daxue xuebao” This study found that type III collagen was significantly more abundant in the recovering traumatic skin of guinea pigs compared to normal skin, indicating it may play a role in tissue repair.
October 2013 in “Journal of Investigative Dermatology” Collagen VII helps skin heal and stay strong, sirolimus may lower skin cancer risk in kidney transplant patients, high-molecular-mass hyaluronan helps naked mole rats resist cancer, dermal γδ T cells aid in hair growth in rodents, and overexpression of IL-33 in mouse skin causes itchiness, offering a model for studying allergic inflammation treatments.
1 citations
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January 2008 in “Aesthetic dermatology” January 2025 in “Regenerative Biomaterials” This study found that a microneedle patch with recombinant collagen XVII significantly improved hair coverage, follicle density, and angiogenesis in an androgenic alopecia mouse model, showing potential as a novel therapeutic strategy alongside established treatments like minoxidil.
14 citations
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February 2011 in “Experimental dermatology” This study identifies cartilage oligomeric matrix protein (COMP) as a key extracellular matrix component in human hair follicle cycling, potentially regulated by TGFβ signaling, and suggests its importance in normal hair follicle biology.
18 citations
,
February 2015 in “Acta Crystallographica Section D: Structural Biology” This study reports that Ca 2+ binding alters the dynamics and surface properties of PKD-like domains in Clostridium histolyticum collagenases, enhancing their stability and potentially aiding in collagen-targeting vehicle development.
16 citations
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February 2007 in “Plastic and Reconstructive Surgery” This study found that keratinocytes show increased expression of the TGF-β system and collagen type I with age, suggesting a heightened profibrotic response during skin differentiation associated with scarring.
10 citations
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January 2024 in “Dermatology Research and Practice” This randomized, double-blind, placebo-controlled study found that a supplement containing hydrolysed collagen and vitamin C (Absolute Collagen) improved skin, scalp, and hair over 12 weeks when taken daily or every other day.
January 2024 in “Archives of Biological Sciences (Beograd)” This study found that AP collagen peptides can promote hair growth by supporting the health of hair follicle cells, as they stimulate cell proliferation, counteract apoptosis, and enhance antioxidant enzyme expression, suggesting potential as a treatment for hair loss.
March 2026 in “Food, Nutrition and Health.” This review highlights research reporting that oral collagen peptide supplements are effective in enhancing skin elasticity, hydration, and reducing wrinkles, although results vary across studies. Oral supplementation was generally well-tolerated, and further investigation is needed to optimize formulations and explore topical application challenges.
December 2023 in “The journal of cell biology/The Journal of cell biology” This study developed the mTurquoise2-Col4a1 mouse model and used fluorescent tagging of collagen IV to offer new insights into basement membrane dynamics during hair follicle budding, revealing that basement membranes are flexible and stable structures in developing skin tissue.
2 citations
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May 2011 in “Pigment Cell & Melanoma Research” In this study, Tanimura et al. reported that loss of collagen XVII in mice leads to hair loss and pigmentation defects, potentially due to impaired TGF-beta signaling affecting melanocyte stem cell maintenance.
January 2026 in “International Journal of Peptide Research and Therapeutics” In this study, adults with mild-to-moderate hair damage taking GPVGPS Collagen® daily for 24 weeks showed significant improvements in hair luster, strength, thickness, and density compared to placebo, with no safety concerns reported.
1 citations
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November 2022 in “Experimental cell research” This study found that a PGE2 matrix, when injected subcutaneously, increased the proportion of developing hair follicles and improved hair follicle stem cell markers in a mouse model of hair loss.
32 citations
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May 2015 in “Journal of Investigative Dermatology” This study found that collagen VI influences hair follicle growth and wound-induced regrowth by activating the Wnt/β-catenin signaling pathway in mice, suggesting potential therapeutic targets for hair loss.
5 citations
,
January 1979 in “Archives of Dermatological Research”
September 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” This study describes the use of a genetically engineered mouse model, mTurquoise2-Col4a1, to fluorescently label collagen IV and observe basement membrane dynamics during skin development, revealing its stability and pliability during rapid growth phases.
11 citations
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April 2020 in “Nutrafoods - International Journal on Nutraceuticals, Functional Foods and Novel Foods” In this study, Bioactive Collagen Peptides supplementation increased hair follicle cell proliferation and improved hair thickness in healthy women over 16 weeks compared to a placebo.
November 2024 in “Journal of Functional Foods” In this study, APC collagen peptides were observed to enhance hair elasticity and gloss in human hair follicles by increasing amino acid and lipid component levels, suggesting their potential benefits for improving hair qualities.
85 citations
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January 1991 in “Journal of Investigative Dermatology” 42 citations
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February 2000 in “Journal of Investigative Dermatology” This study found that Gelatinase A activity is linked to the absence of type VII collagen during human fetal skin development, indicating its role in remodeling the basement membrane zone.