Buy Biotherm Cleansers - Biotherm Biosource Clarifying Cleansing Milk 200ml/6.76oz - Normal and Combination Skin. How-to-Use: Step 1: Wash your hands to remove bacteria and dirt. Step 2: Remove any makeup. Step 3: Splash your face with luke warm water.Step 4: Lather a small amount of cleanser between your hands. Step 5: Cleanse from the neck up to the hairline in a circular motion.Step 6: Rinse with warm water and pat dry.