Please recommend a hair serum.

I have long, straight hair, but even after using a hair mask, it gets frizzy and is hard to comb after drying, so I apply a serum.

I've been using Mise-en-scène's Perfect Original Hair Serum, but I've finished it.

I'd like to try something different. What else would you recommend?

Not too greasy, and not a mist or oil

Serum style

Please recommend a product that smells good and isn't expensive.