This is the totally boss etch you need for for extremely hard surfaces
Tile, colored bathtubs and colored porcelain surfaces present resurfacers with a formidable etching challenge. All of these have been fired at an extremely high temperature so they are very hard. This Extra Strong Etch will get the job done.
First, the formula removes contaminants such as dirt, stains and mineral deposits. Then it opens surface pores, allowing the primer or bonding agent to achieve a secure and long lasting bond. This etch is so thick and creamy it clings easily to vertical surfaces.
Clean and penetrate the hardest surfaces you face with this powerful etch.