Stop smoking or vaping
Use SPF lip balm daily
Exfoliate lips gently 1–2 times per week
Keep lips moisturized with petroleum jelly or a fragrance-free balm
Avoid licking, biting, or picking at lips
Stay hydrated
Remove lip products before sleeping
Avoid irritating lip products with menthol, fragrance, or harsh dyes
Treat allergies or eczema that affect the lips
Use a lip product with niacinamide or vitamin C if tolerated
Reduce excess sun exposure
Eat a balanced diet with enough iron, vitamin B12, and folate
See a dermatologist if darkening is sudden, severe, or persistent
Ask a doctor about prescription treatments if needed