So I'm a little confused about curl keeper and dew points. It contains glycerin which I understand is a humectant that should be avoided in high dews. Yet it seems to be a life-saver for a lot of curlies in the humid summer and the website says to use it in high humidity.

I know that humidity doesn't = dew point, but I just want to know; does it work in high dews for most people? What about low dews?

I'm thinking about ordering it, but it would kinda be a waste for me if it doesn't work in extreme dews.