Yes its thick.. shake well before pouring and before using in the HF. we use 16 oz at 4-600 for most jobs. If I think it needs the Hot Sauce I'll add five heaping teaspoons. It has taken care of everything I wanted it to when I use it. If its really dirty and I know ahead of time, I'll go nuclear on it with Grease Eraser or other high pH like powerburst, enzall, etc..