One drop of the neem oil should be inhaled by the nostrils on an empty stomach in the morning.This will darken the hair .
-Few people cannot tolerate Neem oil well.They must avoid the usage.
(Neem oil is not taken internally . It has a certain toxic level.However some patients who suffer from skin conditions or patients who are in a blood cleansing program may consume 2 drops a day under expert guidance. It is an abortifacient so pregnant ladies should avoid Neem oil altogether.)