To many men, mustaches serve as a symbol of masculinity and strength. Powerful men throughout history, including United States presidents, great thinkers and wealthy celebrities, have made a thick, full mustache the Holy Grail of facial-hair fashion. You may find it disappointing, then, if your mustache hair grows in thin. It's hard to tell how thick your mustache will eventually get, but you can influence the growth process by taking care of the rest of your body.
Stop shaving your mustache. It's a common myth that shaving makes facial hair grow back thicker, but this isn't true. It may take up to one month without shaving for your mustache to grow thick.
Reduce your stress level, as stress is a major cause of hair loss. Do activities that relax you, such as exercising, meditating, taking a walk or reading.
Drink at least eight glasses of water per day. Your body needs plenty of hydration to make a thick mustache.
Eat a well-balanced diet containing multiple sources of protein, such as fish, meat, eggs and beans. Your body requires protein to grow hair.
Massage your upper lip area with a few drops of castor oil at night before bed. Remove the oil with a towel in the morning. This may stimulate your hair follicles to produce a thick mustache.
Take a hair-growth supplement, such as biotin, to boost your mustache's thickness. Biotin can also cause your fingernails and other body hair to grow faster.