I have recently noticed my curls aren't staying together while my hair dries. I just can't figure out why...

I've read the article on frizz and I thought I had 'in curl frizz'. I took a look at my products and the only change I had made was I began using Tresemme Nautrals. I then thought I had build up, so I did a low poo. But I still have frizz.

The pictures were taken today (2nd day hair). I wasn't able to upload those taken while my hair was drying.

We've been having some low dews, but I don't know if that is the culprit.

Any ideas my fellow curlies?????