Using henna with egg yolks on one's hair
Question

                Is it permissible to use henna with egg yolks on one's hair?
Praise be to Allah.There is nothing wrong with that, if there 
          is some benefit in using henna with egg yolks or any other permissible 
          materials. It is OK if there is some benefit to the hair such as making 
          it grow long, conditioning it, etc., or preventing hair from falling 
          out.