Acne should never be taken lightly. If not immediately treated acne can possibly result into permanent scars. There are several ways to treat acne at home and many of the popular remedies have been already mentioned on this site. Below here is another popular remedy of southern India as use of coconut oil is quite predominant there.
Do not use soap when using this remedy. This remedy is useful in removing dead skin as well.
People avoid using oil as it is believed that it causes acne but using oil in this helps in curing them. This is because after multani mitti is applied it soaks the excess unwanted oil from the skin.
Please note: If you have severe acne problem due to hormonal changes then you should immediately consult a doctor as some of the herbal ingredients such as lemon might not suit you.