UFO Thin has a viscosity similar to water and a very fast cure time. It is similar to Hot Stuff, but this is a low-bloom formula so it emits practically NO FUMES or odor. If you have ever worked with CA glue before, you know those curing fumes can be very irritating, which is why we recommend always working with adequate ventilation. However, some people are very sensitive, so even if they work in a well-ventilated area, they still may experience irritation of their eyes and nasal passages. For other people, the work environment is very confined and simply cannot be adequately ventilated. If you find yourself in one of these situations, UFO Odorless CA glue is the answer.