The leaves however are the richest part of the plant They are easy to store since they can be frozen for many months without losing flavor Just one or two are enough to flavor a pot full of soup The leaves can be rubbed on to gums and teeth for total dental health The essential oil in the leaves is extracted and used for various purposes It is a used in many bath products such as soaps and shampoos The oil is a great hair and scalp cleanser The aroma of the leaves is rejuvenating; add a few drops of oil or a few crushed leaves to your bath and you will feel your negative thoughts ease away It is believed to have a positive effect on the mind and the body and leaves one with positive thoughts The oil is also infused in deodorants and body sprays for that extra zing The oil is also used in tonics which aid in digestion and purify the blood Air fresheners with the kaffir lime aroma freshen up rooms and give a feeling of a freshly cleaned room.