act for about 30 minutes or longer but only if you are able to bear the smell of the juice.
also if you want you can cover your hair with plastic bag or shower cup so that the juice will get deeper into your skin.
then, rinse off the onion juice from your hair with plenty of warm water and mild shampoo.
you should repeat this treatment tree times a week and you will notice excellent results very soon and you will be amazed! 