In my experience a hair dryer makes a huge difference in how much frizz I get. I've used professional hair dryers for years. My favourite is FHI Heat. It comes with its own difuser. I find that the hair dryer has to be hot enough that it can dry your hair without having to dry it too long. The longer it takes the more frizz I get. I still don't dry my hair until it is bone dry, but anytime I have had to use a cheaper hair dryer, my hair looks terrible.

While I don't claim to understand the science behind it, I do think that negative ions, etc make a difference .... at least for my hair.

Type: 3a fine & dense,with normal porosity, terrible product junkie
ROUTINE: LI, enhancer, gel, plop with Curlease towel, serum product (either CIAB or Gel-les'c), clip & diffuse.
Too many favourite products to list ... I finally have my routine that works and alot of products to choose from. My product stash is huge, but well loved !!!