Warped from Containing Polish Remover [SEP] After containing Mineral Fusion nail polish remover (one of the most popular, most effective removers on the market), this bottle stopped dispensing as well as it had. Upon inspection, we realized the acetone had started warping the all the parts so that the lid wouldn't totally close anymore, too much acetone started coming out per pump, and, most dangerously of all, the bottle itself had begun warping and starring. What's happening is it is liquifying the plastic and causing it to become molten, but on a very slow level, with the plastic molecules moving because of the organic chemistry of the acetone interacting with this particular type of plastic. It was only a matter of time before it bottomed out in my bathroom cabinet all over everything. Basically, this should be made of the same type of plastic as bottles that hold acetone and for long periods of time, at that. Furthermore, the straw should be of a sturdier material.