- A potent Vitamin C skin cleanser suitable for any skin type with a luxurious lather. C-ESTA Cleansing Gel, containing Vitamin C and DMAE, is a potent skin conditioning cleanser with a luxurious lather. Suitable for all skin-types. Use in the morning and evening. Gently massage a dime-size amount over wet or dry skin. C-ESTA Cleansing Gel is highly concentrated. Adding water produces more foaming lather. Remove with a clean, wet and wrung-out washcloth. Splash face 10-15 times with lukewarm water. Blot dry.