"Shankaprakshalana purifies the body. By practicing with care, one gets a luminous or shining body." Gheranda Samhita"
Shankhaprakshalana is one of the major hatha yoga practices, coming under the heading of dhauti kriya, it is also known as varisara dhauti. Dhauti refers to 'internal washing' and vari means 'water'. Generally the term shankhaprakshalana is applied, shankha meaning 'conch', because of its resemblance to the stomach and intestines; prakshalana meaning 'cleaning'.
Shankhaprakshalana is not just a practice concerning the stomach and intestines, but is a thorough cleansing technique. It creates a repair action which affects the lungs, nervous system, skin, sinus area, the whole body, continuing while the person follows the regime of special food and asanas. In this way we see the reduction of so many disease conditions, diabetes being the most notable, and a positive step in the direction of good health.
This technique purifies the blood, detoxifies the body and stimulate digestion. It helps in the removal of allergies (pollen, dust) and skin diseases (acne, neurodermatitis, and psoriasis).