You say you dry out in the winter. Is it b/c of central heating in your home?
You might try using an electric blanket one night and turn off the heat.
I have a heated mattress cover that i bought at walmart and never use central heat when im sleeping. the vent blows right at my face if i do, and dries me out way too much.
another suggestion is to take a warm bath before bed w/ lots of epson salt and/or spray down your body with apple cider vinegar diluted with distilled water, if it smells too strong. these will relax you and [temporarily] purify the skin. cayenne pepper is also good for this type of dexoxification.