Gray BeardsIn this series, David goes over his experience with having a gray beard and shares his tips with you all. Loading Gray Beard: What causes gray beards? Loading Gray Beard: Broccoli Seed Oil for Gray Beards Gray Beards Episode 3: Purple Shampoo? Gray Beards Episode 4: Castor Oil Gray Beards Episode 5: Argan OilShare this:TweetLike this:Like Loading...