Let your facial hair grow for 2–6 weeks without shaving
Wash your face and mustache area daily
Exfoliate your skin 1–2 times per week
Apply beard oil or moisturizer to reduce dryness
Comb or brush the mustache regularly
Trim stray hairs to shape the mustache
Use a small trimmer or scissors for precision
Eat a balanced diet with enough protein, vitamins, and minerals
Stay hydrated
Get enough sleep
Exercise regularly
Be patient while it fills in
Shave the surrounding facial hair if you want a cleaner mustache look
Consult a dermatologist if growth is patchy or unusually slow