I'm a total hair nut...you have to use good products and that means spending money on them. The Chi iron is great.....try Kerastase products, or Terax products. They are both wonderful. You only need a small amount and so they will last months. You can get Kerastase at any really good high end salon (I live in Boston and there everywhere). Terax has the BEST conditioner, but it's harder to find. I buy mine online...just google Terax conditioner and it comes up. I have naturally wavy hair and I either put hot rollers or flat iron it everyday, and I will tell you that the friz could be cause from product build up...I use a product call "latte" by terax once a week to get rid of the build up and I never have frizz....so use good products and then you can use all the heat products you want.
I'm sorry, I'm gonna sound snarky here, but almost all of this is untrue. I do agree Terax is a good product. Kerastase, however, is an absurd waste of money. Here are the ingredients in a $95 16 oz jar of oleo conditioner:
Water, Behentrimonium Chloride, Cetearyl Alcohol, Glycerin, Amodimethicone, Potato Starch Modified, Cetyl Esters, Isopropyl Alcohol, Elaeis Guineensis Oil, Shorea Robusta Seed Butter, Methylparaben, Trideceth 12, Citric Acid, Chlorhexidine Dihydrochloride, Cetrimonium Chloride, Yellow 10 (CI 47005), Red 4 (CI 14700), Fragrance
Here are the ingredients in a $3.29 8 oz Suave conditioner:
Water (Aqua), Cetearyl Alcohol, Centrimonium Chloride, Dimethicone, Fragrance (Parfum), Quaternium 18, Potassium Chloride, Hydroxyethyl Cellulose, Propylene Glycol, Disodium EDTA, TEA Dodecylbenzene Sulfonate, DMDM Hydantoin, Glycerin, Panthenol, Hair Keratin Amino Acids, Sodium Chloride, Methylchloroisothiazolinone, Methylisothiazolinone
See much difference? I don't. If I had a choice I'd go w/Suave b/c it has less glyerin, which makes hair extremely frizzy in dry weather, & it has protein, which is what your hair is made of.
The statement "you can use any heat products you want" couldn't be more wrong. Heat is THE most damaging thing for your hair. Damaged hair = frizzy hair.
P.S. you can buy Kerastase at your local CVS or drugstore.com. You don't have to go to a high end salon for it.