Is this possible with my shampoo routine?

[dustinb]

Hi guys
Im starting to use Nizoral 2% for my hair. Im been using Jasons thin to thick shampoo, not for hair growth, just I like the thickness it has on my hair. I was wondering:

1. Would it be possible to do a 50:50 mixture, so I can get the benefits of both? or if not
2. If I washed my hair first with Nizoral, then rinsed it off, then shampooed again with Jasons, would the Nizoral still be present in the scalp?

Thanks for your time!!