Natural clay is a safe topical that can be used for acne, bug bites, cold sores, and other instances where detoxifying the skin is beneficial. Made into a paste with water, it is soothing, detoxifying, and healing to the skin. French green clay gets its greenish cast from a combination of iron oxides and chlorophyll from decomposed plants and algae. One study found that French green clay can inhibit bacterial growth.
To use, mix with a small amount of water to make a paste. Apply the paste to acne spots, bug bites, and cold sores, or use as a facial mask. Allow to dry, then gently wash with a soft cloth and water.