Healthy skin should be around ph 4.5 - 6.5. Bacteria actively grow under high ph therefore we need the skin care product that can balance the ph for us. Sebum contains Fatty Acid and our sweat contains Lactic Acid, therefore oily skin = lower ph dry skin = higher ph. Description: Material: Natural fiber Color: White, Bamboo charcoal black, Green Diameter: Approx. 7.5 cm / 2.95 inch
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