Hair spray products are quick-drying liquids sprayed on the hair to keep it in place. They contain ingredients that stick to the hair and hold it in place for a short period of time. The safety of Hair Sprays is established by selection of ingredients that are safe and suitable for this purpose. In addition, Hair Sprays are assessed for their potential to cause scalp and eye irritation. Product safety is also established though strict adherence to the principles of Quality Assurance and Good Manufacturing Practices. This includes testing the compatibility of the product with packaging as well as shelf-life stability. The FDA has does not permit the use of vinyl chloride or methylene chloride in aerosol products, including Hair Sprays. Find out more about FDA regulation of vinyl chloride and methylene chloride in aerosol products. Finally, the safety of products is monitored in the market-place to track any reports of consumer injury. Companies include a phone number on their products where comments or complaints may be reported.