Moustache wax comes in different strengths. Strong moustache wax is for gravity defying styling (think Salvador Dali). Medium strength wax is good for shaping and a slight curl (but not a full rotation) of moustache hair. Soft wax will help to keep it pushed to the sides and out of one’s mouth. Soft moustache wax can also be mixed with Beard Balm for those who want to shape their beards with something stronger.
Also checkout out a Definitive Moustache Wax Guide to help narrow down the choice!