79 citations
,
March 1999 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that procyanidin oligomers, particularly dimers and trimers, significantly promoted hair growth in mice and hair epithelial cell cultures, suggesting potential use as hair growth agents.
37 citations
,
January 2002 in “British journal of dermatology/British journal of dermatology, Supplement” This study found that procyanidin B-2 may promote hair growth by reducing expression and inhibiting translocation of PKC isozymes in murine hair epithelial cells.
36 citations
,
December 2002 in “Experimental dermatology” This study found that procyanidin B-3, a compound isolated from barley extract, may promote hair growth by enhancing hair epithelial cell growth and counteracting TGF-β1's growth-inhibiting effects in vitro and in vivo.
32 citations
,
December 2000 in “Phytomedicine” In this study, 1% procyanidin B-2 tonic significantly increased the number of total and terminal hairs on the scalp of male participants compared to a placebo after 6 months of use.
32 citations
,
January 2000 in “Skin pharmacology and physiology” In this study, procyanidin B-2 and C-1 were found to promote hair growth by selectively inhibiting protein kinase C, supporting their potential use for hair-growing activity.