As a makeup primer, Monistat anti-chafing gel (at 6 dollars) has the same active ingredients as Smashbox's Primer (selling for 36 dollars) - The Monistat actually does a BETTER job keeping my makeup on and filling in fine lines and pores - keeps skin soft and smells great too.
Another pinner said: Baking Soda Shampoo. I tried this today. It's AMAZING! I just mixed it in with my regular shampoo. My hair feels so light and has crazy volume. It removes all the product build up Wow! Also use baking soda and water as a face mask for 15 minutes to dry up oil in your pores.