December 2011 in “University of Southern California Digital Library” In this study, transgenic mice with active BMPR1A signaling in the epidermis had impaired hair follicle morphogenesis and showed age-related hair loss, implicating BMP signaling in hair follicle development and homeostasis.
This study found that consumption of dietary supplements and sports nutrition may lead to therapeutic and cosmetic improvements, benefiting skin, hair, and nails while potentially enhancing athletic performance.
November 2024 in “Applied Sciences” This study suggests that while some evidence indicates potential efficacy of placental products for hair growth and inhibiting hair loss, the current scientific evidence is scarce and of low quality.
October 2014 in “University of the Arts London Research Online (University of the Arts London)” This study compared hydrolysed wheat protein, L-arginine, and hydrolysed collagen for their effectiveness in enhancing the tensile strength of heavily bleached hair.
January 2026 in “Journal of the Egyptian Womenʼs Dermatologic Society” This study observed that male patients with alopecia areata had elevated serum levels of HSP70 and IL-15, with levels increasing alongside disease severity, suggesting these markers are strongly associated with the disease's pathogenesis.
67 citations
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June 2018 in “Engineering in Life Sciences” This review discusses advancements in plant cell culture technology for producing potent natural cosmetic ingredients and reports no new experimental results.
March 2026 in “International Journal of Cosmetic Science” This research reports that KCV and its palmitoylated derivatives show strong effectiveness in strengthening hair proteins, indicating their potential for use in advanced hair care products.
August 2021 in “Journal of the American Academy of Dermatology” This study reported that an anti-hair loss shampoo containing six active ingredients activated the Wnt/β-catenin pathway in human hair follicle dermal papilla cells in vitro.
36 citations
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September 2011 in “British Journal of Dermatology” This study found that white hair exhibits increased expression of genes and proteins linked to active hair growth compared to black hair, suggesting that hair greying is associated with enhanced hair growth activity.
2 citations
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January 2025 in “Pharmaceutical Research” This article reviews the possible therapeutic activities of Angelica gigas Nakai root extracts and their components, noting their potential effects on neuro-cognitive, metabolic, and other health conditions, and reports no new clinical results.
2 citations
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April 2011 in “InTech eBooks” This review discusses the potential skin care benefits of non-denatured soybean extracts, including skin lightening and UV protection, but reports no clinical results.
4 citations
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July 2022 in “International Journal of Cosmetic Science” This study found that the moisture sorption and desorption process can differentiate between cosmetic treatments of hair and provide insights into hair fibre structure changes, with bleaching causing greater symmetry breaking than perming.
In a study on hair loss treatment, researchers found that a serum containing Cinchona succirubra extract and caffeine improved hair density and reduced hair loss in individuals with acute telogen effluvium after 16 weeks of use, with significant improvements observable after just 4 weeks.
176 citations
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September 2006 in “Stem Cells” This study found that active BMP signaling prevents epithelial stem cell activation and expansion in hair follicles, while its inhibition leads to HF stem/progenitor cell overproduction and matricomas.
April 2011 in “The FASEB Journal” This study found that profilin1 protein significantly accelerated wound healing in transgenic mice by reducing wound size and enhancing vascularization and cell migration compared to nontransgenic and 88R/L mice.
26 citations
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December 1990 in “Journal of Biological Chemistry” In this study, elevated mRNA levels for serine-rich ultra high sulfur proteins were observed during active hair growth phases in mice, particularly in the forming hair structures and upper skin layers.
40 citations
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May 2005 in “Journal of Cell Science” In this study, transgenic mice expressing a truncated form of latent transforming growth factor-β-binding protein exhibited altered hair cycles due to increased active transforming growth factor-β, impacting keratinocyte proliferation and hair cycle phases.
77 citations
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February 2001 in “Journal of Dermatological Science” HGF activator helps convert HGF to its active form, promoting hair growth.
25 citations
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April 2021 in “The EMBO Journal” This review discusses the role of hair follicle stem cells as active signaling centers in skin homeostasis, highlighting recent advancements and reporting no new clinical results.
This study found that while many shampoo ingredients are marketed as effective against hair loss, only caffeine, adenosine, placental proteins, and melatonin have moderate clinical evidence for efficacy, and a majority of other claimed active ingredients lack clinical trial verification.
April 2021 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that a shampoo containing a 6-active ingredient complex increased β-Catenin production in human hair follicle dermal papilla cells to levels comparable to Finasteride, suggesting potential for promoting hair growth. It also showed good cleaning efficacy, volume, and shine in a sensorial study.
9 citations
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September 2009 in “PubMed” This case report presents the first evidence of significant antigen presenting cells around hair follicles in a patient with alopecia due to active systemic lupus erythematosus.
July 2025 in “Journal of Investigative Dermatology” This study found that both desmoglein-specific and non-desmoglein autoantibodies may play active roles in Pemphigus vulgaris pathogenesis, with HLA genetics influencing autoimmune specificity.
This study proposes that neutralizing antibodies and exosomes in convalescent plasma may interfere with early immune responses, potentially explaining limited success of this therapy in active COVID-19 infections.
83 citations
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August 2020 in “Resources” This review highlights the potential of marine macroalgae as a largely untapped resource for developing new active ingredients in the cosmetic industry, emphasizing their role in supporting circular economy models by utilizing waste from other industrial sectors.
9 citations
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January 2018 in “BioMed Research International” This study found that topical application of TSG from Polygonum multiflorum promoted hair regrowth in depilated mice, potentially through the inhibition of apoptosis-related proteins.
This study found that a hair treatment cream using keratin protein from chicken feathers effectively improved damaged hair, particularly by repairing the surface layer.
November 2025 in “Cosmetics” This study found that of the many ingredients advertised in shampoos as effective against hair loss, only caffeine, adenosine, placental proteins, and melatonin have limited clinical evidence supporting their efficacy, with most claimed active ingredients lacking any trial-based validation.
34 citations
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January 2004 in “Genomics” In this study, researchers identified a cluster of hair-specific keratin-associated protein genes within the 21q22.3 region, revealing a novel transcription mechanism involving TSPEAR/C21orf29 that may bypass typical transcriptional termination sites.
15 citations
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January 1996 in “Adelaide Research & Scholarship (AR&S) (University of Adelaide)” This review discusses the structural knowledge of wool keratin proteins and genes, reports no new findings, and highlights promising directions such as keratin gene regulation.