Yes, I am are you using Etos products for your hair? Cause I'm using the Etos Solid Power Gel. That helps a lot with frizz, although I have to say with the high dewpoints we have in the Netherlands recently I have trouble managing frizz as well.

Have you read about dewpoints already? Basically it means that with higher temperatures and much humidity, dewpoints are higher and can cause more trouble like causing frizz. You'll have to be careful with humectants (anything that attracts moisture) in products (high on the ingredient list), like glycerine, glycerol, sorbitol, panthenol etc.

You could try to seal wet hair with a bit of oil. Just smooth a bit (nail tip) of natural oil over your hair and scrunch on the ends before using a styler.