I use a coctail of various styling products, but my staple is Phytospecific Beauty Styling Creme. The stuff is miraculous. Oh & a deep condition with heat once a week helps.
Typically I use a silicone gloss by Rusk right when I get out of the shower, wrap my hair in a towel while I moisturize, etc., unwrap my hair & put on the Phyto, scrunch a little & put on a spray gloss (again by Rusk). Then I do my makeup & get dressed while my hair air dries. Then about 5 minutes of blow drying with a diffuser.
What's most important to avoid frizzies is keeping your hair healthy. Things you should avoid: rubbing your hair with a towel (creates friction & hair damage), any kind of heated styling tools (especially a flat iron, I read in Paula Begoun's book that you literally boil your hair shaft with a flat iron), keeping the hair dryer in one spot when you dry your hair and, of course, sun exposure (just like skin, probably the most damaging thing to hair).