Dietary Products to Affect Hair Growth
There are no published clinical data to back up claims that certain foods, over-the-counter medications, vitamins or other preparations taken by mouth can slow or stop hair growth.
The only oral product that have demontrated they can affect hair growth are prescription oral medications. There are a few old wives' tales floating around that eating certain foods can reduce hair growth. These rumors have never been proven with testing.
Recently, some people have suggested that eating a meat tenderizer called papain or another called bromelain can reduce hair growth. These rumors have no basis in clinical research and should be disregarded.