When you're in a hurry, it's so much easier to use a sheer tinted moisturizer that can be slapped on rather than a foundation that needs to be carefully applied. Not only does e.l.f.'s foundation stick ($3) provide sun protection and lightweight coverage, but it also adds moisture to my dehydrated complexion with aloe and cucumber. Bonus: it's so affordable, you can have one in every bag.
e.l.f. Tinted Moisturizer SPF 20