Dala Casting Rubber is a Liquid Latex moulding rubber and can be used to reproduce any three dimensional article for reproduction casting. Dala Casting Rubber is a water based latex and dries to a soft flexible feel like an elastic band. It dries at room temperature and needs nothing mixed into it to dry. You can put the lid back on and use it when ever you want to. This product is self-releasing from the host as well as from your casting material. More layers should be applied for large articles. Wait for each layer to dry before applying a new layer.Dala Casting Rubber is non toxic however it has ammonia in it which makes it not suitable for food