It's in Beauty Salons too
Careful. These products (vinyl Chloride) are not just in industrial settings. Vinyl Chloride was once very common in beauty salons. It still shows up there...
One of the most common types of synthetic hair is made from fibers known as modacrylics. These consist of a long chain synthetic polymers composed of less than 85% but at least 35% by weight of acrylonitrile units. (-CH2CH[CN]-)x. (I’m sorry, but the Left Brain made me put in the chemical structure. I apologize in advance for the geekiness.) Modacrylics can also include mixtures of acrylonitrile and other materials, such as vinyl chloride, vinylidene chloride or vinyl bromide. (Yawn, enough organic chemistry already!)
Source: The Beauty Brains