Depending on the type of towel you are using for plopping, it can definitely give you frizz. I used to plop with a MF towel, but have since switched to the Curlease towel. The MF towels dry it much quicker, but I get frizz very easily with them. I never get any frizz with the Curlease towel.
Are you putting in enough product? After I take off my towel, I almost always have to scrunch a bit more product into my hair. The plopping seems to remove some of it ... again it is much better with the Curlease towel, but I still have to put some in. The MF towel used to take a lot of the product out of 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 !!!