The source lists four options: plain water, hydrolate (floral water), herbal infusion, or yogurt. Water gives the most neutral base. Hydrolates (e.g., rose, lavender, witch hazel) and cooled herbal infusions (chamomile, calendula, green tea) impart their characteristic plant compounds — astringent, soothing, or antioxidant — which may complement the clay’s adsorbing action. Yogurt adds a small amount of lactic acid and fat, creating a richer, more emollient paste that can feel gentler on dry or sensitive skin. Whichever liquid you choose, add it slowly while stirring to avoid lumps; the final texture should be a smooth, cohesive paste that stays in place on vertical skin. Metal bowls or utensils are not mentioned in the product guidance, but many users prefer glass, ceramic, or plastic to avoid any potential reaction with the clay’s mineral content.