Color: Black; Material: Natural fiber Safety,Deep cleansing,No stimulation Natural Suitable for all type of skin Diameter: . 7.5 cm / 2.95 inch Healthy skin should be around ph 4.5 - 6.5. 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. sponge is about ph 6.2 which is close to the ph of Milk. The sponge is made from a material which is called (in Japan it's known as Konnyaku). is a perennial herb in aroid family and since ancient times, it has been widely used as a and edible natural plant. is a popular and healthy vegetable in Korea and Japan. Being unbelievably soft and gentle, sponge exfoliates dead cells while wiping the face and body, and leaves behind a colloid film to nourish and protect your skin. A Sponge contains no or artificial pigment. Package Include:1 x Wash Face Sponge Note:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.