Usually, when the dewpoint is lower, you need to add moisture to your hair. When the dewpoint gets REALLY low, it can just "suck" the moisture out of your hair.

While I use the same products in the LOW dewpoints, I add a layer. In higher dewpoints, I use a leave in OR a curl enhancer with a jelly product. In the low dewpoints, I use a leave in AND a curl enhancer with a jelly product.
3a (Corkicelli), highlighted, fine, low porosity
SE PA

HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic (now Hello Curly Curl Stimulater); Botanical Spirits Jellies, CJ Repair Me, Aloe Fix