I wouldn't say stay away from all humectants. Just use them in moderation. Glycerin seems to be the most tricky one to use for most people. When dews are low I limit it to just in rinse out conditioners. I never leave it on my hair.

I would also:

- seal with a creamy butter
- oils are okay
- spritzes are a good idea

This is my routine in winter and it seemed to work pretty well when I went to Arizona last year. If I could change anything I probably would bring KCCC with me next time. I freaked about the lack of humidity and didn't bring it.

I'm sure other desert curlies will chime in.
4a/b Texlaxed hair w/ highlights. Medium texture & high porosity.

HG's: CJ Daily Fix, Bobeam Cheris Hibiscus shampoo bar, KC Spiral Spritz, Knot Today, CJ Rehab, KBB LL Hair Mask, Cassia, KCCC, oil blend of Avocado, Camellia, Jojoba, & Meadowfoam oils