Made of PVA, these sponges are non-toxic and safe to use. The sponges have various functions, including cleansing skin pores, protecting skin from radiation, removing excess oil and brightening skin tone. Produce more bubbles to deeply clean skin. Fine and smooth, the sponges won't hurt skin. Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!