Use a broad-spectrum sunscreen with SPF 30 or higher every day
Apply a gentle cleanser twice daily
Moisturize regularly with a non-irritating, fragrance-free moisturizer
Avoid lip licking and frequent rubbing around the mouth
Stop using harsh scrubs or abrasive exfoliants
Use products with niacinamide, azelaic acid, vitamin C, or licorice extract
Consider a mild chemical exfoliant like lactic acid or glycolic acid a few times per week
Treat any acne, eczema, or irritation around the mouth
Check for possible causes like smoking, toothpaste irritation, or hormonal changes
Use a toothpaste without strong whitening agents or sodium lauryl sulfate if irritation occurs
Maintain good hydration and a balanced diet
Avoid picking at the skin
Consult a dermatologist if the darkness persists or worsens
Seek medical advice if the discoloration appears suddenly or is accompanied by other symptoms