Back to Nature Tough2-Strip is an industrial strength remover that safely strips the toughest paint coatings. Where speed of removal is critical, a lighter coat of Tough2-Strip™ will remove 1 to 4 layers in 15 minutes to 4 hours. For tougher jobs or coatings, a heavier application will remove the paint in one application. This product is environmentally safe, biodegradable, non-flammable, and contains no methylene chloride or caustic. It is odor-free and can be easily cleaned up with water. For application,it can be brushed, rolled or sprayed. It requires no neutralization (neutral pH).