I need a hair tool that gives me the best hair ( fine hair )

I live in a super humid place and my hair (slightly wavy) gets puffy FAST and loses shape right after styling. My roots are the worst — only a straightener makes them look sleek, otherwise they puff up immediately.

I have the Shark FlexStyle and a Remington straightener but honestly… I’m not impressed. My hair still ends up puffy.

I just want smooth, sleek, “salon blowout” hair that actually lasts all day with minimal effort. I work out 4x/week so I need something quick and efficient.

I don’t care about the price — I just want something that works: tools or ONE good product (not 10 pls 😭).

Dyson? GHD? What actually keeps hair from puffing in humidity??