For most men, graying is a fact of life. When worn with confidence, gray in a beard looks distinguished. Yellowing is a common problem as gray hair ages. Several brightening shampoos and conditioners are on the market for gray hair and also can be used on beards. These product contain toners that gently dye gray hairs. The dye tones down brassiness to remove the yellow and returns the beard to a crisp, vibrant gray hue.
Wet your beard with distilled water. The chlorine in tap water is often partially responsible for yellowing in gray beards.
Lather the brightening shampoo in your beard. Work it in to make sure all of your beard is covered, not just the yellow hairs.
Rinse the shampoo out with distilled water after the manufacturer-recommended set time. Do not exceed the set time. Prolonged exposure may give the gray in your beard a bluish tint.
Pat your beard dry with a clean towel.
Read the label before you buy the shampoo. Make sure that the shampoo is specifically designed to brighten gray hair and remove yellowing.
Brightening shampoo is not for daily use. Follow the shampoo's instructions to the letter and do not use it any more often than necessary. Shampooing with brightening shampoo more than once a week will give the gray in your hair a temporary blue hue.