The pureSOL Konjac Sponge is natural and biodegradable. It is great for your skin and of course it can be used over and over again. I was introduced to these sponges when I was in hospital for a month! This little guy was one of my heroes. I loved the soft feel on my skin and you can get these sponges made with different extracts like charcoal and turmeric. Make sure you read the fine print on the product before you buy it, so you can make sure the packaging is recyclable and the product is actually biodegradable. It might sound untrue but my sponge is still alive and it has been almost four months.