How long does the mini last?

I use this mascara everyday and the mini size lasts several months. I always end up replacing it before the bottle goes empty though so it could last even longer. I found the larger size to be too much and a complete waste of money even with layering my mascara as much as I do. Also, I found the actual product and texture of the mini to be way better than the larger size and it doesn't go old/bad as quick as the large one.