Activated Hardwood Charcoal is made from hardwood, a renewable resource. It is activated with phosphorus acid which is evaporated out and further removed through washing so that the finished product is chemical free. As a wood-based activated carbon, it is highly adsorbent due to the particles’ large surface area and high volume of pores compared to activated charcoal produced from other non-wood materials. As a result, high purification happens in a shorter time while using less carbon. Hardwood charcoal is often used to remove stains and for color removal, and is a common ingredient in natural teeth whitening products. It is also used in face masks and skin care products.