The tonic eliminates the rest of the toxins and dirt from your skin leaving it fresh. It is preferable to use a nonalcohol tonic. Alcohol based products can produce more problems to the skin because they can give you the false impression of controlling the oil of your skin, but at the end, can produce even more, causing more unwanted acne and oily skin. biofit It is very important to apply the tonic over very clean skin to get the complete benefit from it. Some good homemade tonics are Rose water, Chamomile tonic, etc. Our skin is changing constantly and produces new and young cells every day. These will replace the dead cells, but to allow those new cells to reach that superior level of regeneration, we must get rid of our dead ones.