Best Acne Soap for Face. Pimples and acne are a major source of stress and unhappiness. Face Acne and Back Acne are especially troublesome. Clariti All-Natural Acne Treatment Soap is a mild, moisturizing formulation featuring 8 botanicals (including Multani Mitti clay, Tea Tree Oil, Neem Leaf, Olive Leaf, and Green Tea) proven effective for cleaning up pimples and acne breakouts.