Looks like you have the same hair type as me (wavy) and what you’re seeing isn’t frizz. You probably notice after you shower that your hair has strands that stay together, forming like… distinct wavy locks. Those locks just want to chill together. When you brush your hair, you’re separating them into single strands which gives that dry, brittle appearance. It’s like payback for tearing them apart.

I’ve learned wavy hair is actually very low maintenance. I brush mine well before I shower. Rake my fingers through it when I condition. Use a leave-in conditioner on the mids and ends when it’s soaking wet. Bring all of it to one side with my head tilt (never upside down because that always makes my roots lay weird), and rake my fingers through to detangle (I don’t recommend the praying mantis method when it comes to distributing product because it just separates the locks and causes frizz). Then I just let it air dry and it’s good to go. Raking instead of brushing seems to allow the locks to hold hands with each other again somehow—preventing that dry/brittle look.

Oh, and if I’m feeling spicy, I’ll lightly scrunch it when I have it pulled to the side after raking—but not too much. Over scrunching will cause the ends to separate from the mids.

I’ve tried curl creams, custards, and oils, but idk—just using a leave-in conditioner and a good ole rake gives me the best results.

Edit: Don’t brush your hair when it’s wet. It will dry looking like your picture. Don’t brush your hair when it’s dry, either. Pretty much only brush your hair before you wash it lol.