Skin has three layers: 1  The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. 2  The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands. 3  The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.
1 Your guide may recommend the application of butter or ghee to draw out and lengthen your tongue. At this point, your tongue should be long enough to reach the center of your eyebrows.  Even with a guide, Kechari Mudra may take months or years to master.
To treat this form of coated tongue, brush or scrape your tongue. Drinking extra water may help if dehydration is a cause. You can prevent white tongue through eliminating excessive alcohol consumption, quitting smoking, breathing through your nose, and practicing good oral hygiene.