May 2024 in “International journal of medicine and psychology.” In this study, combining transcranial electrical stimulation with bisphosphonate therapy in patients with postmenopausal osteoporosis resulted in a protective effect on bone collagen synthesis, as indicated by higher P1NP levels over 12 months, compared to bisphosphonates alone.
4 citations
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September 2012 in “Journal of dermatological science” The hair follicle's connective tissue is a key source of a certain collagen in human scalp skin.
April 2016 in “Journal of Investigative Dermatology” This study found that gypenosides from Gynostemma pentaphyllum increased procollagen synthesis in vitro and reduced periorbital wrinkles by about 14% in a clinical trial with 24 women.
December 2025 in “Pharmaceutics” In this study, araliadiol, a plant-derived compound, exhibited senomorphic effects in three dermal fibroblast senescence models, suggesting its potential as a topical treatment to mitigate skin aging by reducing certain senescence-related markers and increasing procollagen type I content.
10 citations
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February 2014 in “Fitoterapia” This study found that Pomiferin may effectively stimulate extracellular matrix protein expression in skin and scalp models, with results comparable to retinol, suggesting potential as a topical treatment ingredient.