I think this is one of the best and one of the safest nail polish on the market. It is pretty safe, it still contains acetone though. The colors are beautiful and they last for long time. I love all Sante Naturkosmetik products, they are all certified by the BDIH (a German Natural and Organic certification body that issues it's mark to approved products that satisfy it's stringent criteria), except the Nail Varnish. However, it is the safest to use.