My opinion is that regardless of hair type, each head of hair has moisture needs that have to be met. Now, when its cold (low dews) there is no moisture to be had from the air and so whatever gel (which those on the market on average are humectant loaded) will suck the moisture from your hair instead since that's where the moisture concentration is highest.
So in low dews we increase conditioning and avoid things like humectants that will "steal" moisture from you in the low dew climate.
In higher dews, your conditioning needs are less because now all those lovely humectants in your gels and such are working for you. The moister environment is the air (and not your hair) so moisture is drawn into the hair.
Now what is gel? Well it really depends on the ingredients whether it "seals" or prevent moisture from leaving the hair--but what gel does isn't block moisture out but provide HOLD to lock in your style with things like polymers/copolymers which are stiffening agents. Once the hold is achieved, the gel is supposed to prevent changes in conformation (like a curl shouldn't fall flat or frizz). As you know, gels come in varying strengths.
I've said a lot here, so take home points are:
- The moisture ultimately comes from you so do what you need to do to meet your needs, and the weather may or may not be helpful depending on the dew. In the higher dews its just simply a more favorable environment for curls because moisture is to be had everywhere.
-Gel doesn't prevent moisture from coming in, it simply locks in a style. If you primarily work indoors and you aren't outside exposed to the weather then perhaps your gel doesn't need to be as strong, but most people regardless of whether they're outside or not require some level of hold to maintain their curl pattern (especially looser curlies) and also to ward off frizz. Only you can judge what level and type of moisture you need (which depends on how balanced your hair is in terms of moisture to protein ratio) and the type of hold you require.
HTH, and sorry for being longwinded.
RCC is coarse as well as porous so hopefully she'll see this and chime in. She is also our resident dewpoint expert.
3c with some 4a highlighted
Low porosity thick/coarse texture. nml elasticity
No rules, just happy hair
Cleanse: CJDF, Prell, LUSH Curly Wurly, Bobeam
BBB, CJ, SheaM, HEHIS, Garnier, KBN Shealoe, CD Chocolat, Oyin HH
CJ, CR, UFD, Zuresh, Ecostyler,MJ
PT/DT: BBB, CJ, Lather