Not what you'd expect from MAC

I hate this mascara. I know that is a strong statement, but it is literally the worst mascara I have ever used. It made my lashes clump together. The problem is the formula. I tested the silicone bristle applicator it comes with is another mascara formula and that went on fine. Then I tried this Mac formula with two different bristle mascara brushes, and the results were the same - clumps!