if the red hairs were in the beard years ago, then you have that ability for red hair and could explain the change that sun and cleansing foods can cause....
the original topknot i only sprayed on my temples and never all over my hair ad it worked great to keep grey away. the herbs didn't have to be sprayed on the hair, but just on the scalp that increased circulation..
the herb sprays are all about increased circulation and i believe the red hair thing is caused by increased circulation only........and is a cleansing/healthy thing that people have never known much of before, but one author did write about in the 1800's.
and at this point i do not know if the reddness is temporay or permanent.
kind of like people that have greys eyes after years.....and using the eye sprays and getting blue eyes.....if it happens, the body made it happen...the herbs are dead and just plant minerals...nothing more.