68 citations
,
May 2018 in “PLOS Biology” This study demonstrates that inhibiting SFRP1 with the antagonist WAY-316606 enhances hair growth in human scalp hair follicles ex vivo by facilitating Wnt signalling.
27 citations
,
September 2017 in “Journal of Medicinal Food” In this study, researchers found that a polyphenolic extract from Annurca apples, high in procyanidin B2, increased hair growth, density, and keratin content in healthy subjects after 2 months of use, and stimulated keratin biosynthesis in vitro.
79 citations
,
January 2017 in “Dermatology practical & conceptual” This article addresses the need to screen for nutrient deficiencies in patients with hair loss but reports no new findings, noting that supplementation without deficiency may not be beneficial and could pose risks.
5 citations
,
February 2011 in “Expert Opinion on Drug Discovery” This review discusses techniques and models for assessing hair growth activity but reports no new clinical findings, emphasizing the need for standardization and improved animal models.
282 citations
,
April 2007 in “Journal of Agricultural and Food Chemistry” This study found that apple polyphenol extract, particularly oligomeric procyanidins, inhibited pancreatic lipase activity and reduced triglyceride absorption in both mice and humans.
14 citations
,
January 2006 in “Skin pharmacology and physiology” This study found that procyanidin oligomers from apples and barley may stimulate hair growth by promoting hair epithelial cell proliferation and protecting them from apoptosis via MEK activation in a murine model.
26 citations
,
June 2001 in “PTR. Phytotherapy research/Phytotherapy research” This study reported that a 1% procyanidin B-2 tonic increased hair diameter and density in men with male pattern baldness, suggesting it may be a potential treatment option.