79 citations,
March 1999 in “The journal of investigative dermatology/Journal of investigative dermatology” Procyanidin compounds from grape seeds were found to significantly increase mouse hair growth.
37 citations,
January 2002 in “British journal of dermatology/British journal of dermatology, Supplement” Apple extract called procyanidin B-2 was found to greatly increase hair growth.
36 citations,
December 2002 in “Experimental dermatology” Barley extract, specifically procyanidin B-3, can promote hair growth and counteract growth inhibition.
32 citations,
December 2000 in “Phytomedicine” Apple-derived procyanidin B-2 can safely promote hair growth in men.
32 citations,
January 2000 in “Skin pharmacology and physiology” Certain substances that block a specific protein help promote hair growth.