Q&A: Making a light, sprayable lotion for the summer – part one, base formula and ingredient choices

In the July Q&A, Sarah asked:  I am interested in sprayable body lotions (milks). I live in hot and dry Southern California, so in the summer I want something portable, with a nice high water content, and light emolliency to protect my skin from drying out in the desert air. I understand that esters should…