When acid washing your bathtub, you are essentially refreshing the surface. Acid washing is very dangerous if it is not done properly.
Protect yourself from the acid by wearing gloves, long sleeves, pants, and goggles.
Don't Use Too Much
It is important that you do not use too much of the product because it can hurt both you and the bathtub. A thin layer covering the bathtub is enough.
Follow the manufacturer's directions carefully. Make sure you read the instructions before you begin working on it. The instructions will let you know exactly how much to use and how long it will need to set.
This task is is performed whenever you are reglazing the surface.