The DF- 50 Diffusion Hazer is an industry standard. Hazers provide an atmospheric effect that has a slightly hazy or smoky appearance. A hazer is an essential component of many event lighting or laser packages. This hazer is the safest and most efficient product on the market today. The DF 50 uses a non-glycol based haze solution comprised of a food grade mineral oil blend. Any haze produced is odorless and will not leave any residue.