I think frizz is a symptom that your hair wants to be curly. If it needs a bit of help to be formed into curls, then style it with some product (my favored two methods below). Curly hair also doesn't need washing as much as straight hair; I only wash mine every 4 days or so, sometimes even longer. A hairnet at night helps it to keep the curls neat and tidy, and I highly recommend Lotta Body setting lotion as it's not greasy, heavy or sticky or hard, unlike other styling products. I had straight hair as a child and now have wavy/curly/frizzy hair. If I let it dry naturally it just turns into a massive lion's mane.
Since my hair straighteners broke I have embraced my curly hair and had it cut into slight layers that were easier to curl. To style it I either:
1) Put it into pin curls while damp and sleep like that, and then use some kind of serum or styling product in the morning when I take the pins out, or:
2) I put in some "Lotta body" styling lotion (diluted) and then twist strands around my fingers. Then I use a diffuser and tilt my head so the heat is coming up from the bottom, bunch my hair up in my hand to give it volume while keeping the curls intact, rather than creating limp curls by blowing the air from above.
Hope that helps!