Your lips can look dark for several reasons
Why real-world use can differ The tables and calculator show pure arithmetic based on labelled dose volumes and strengths
Gradual dose escalation under clinician supervision, spacing meals, and avoiding reflux-triggering foods can help minimise symptoms
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Green, "If you have prescription-strength azelaic acid, Retin-A, or other topical creams, you should consult a dermatologist." Depending on your skin type and concerns, azelaic acid can be found in over-the-counter products in all sorts of strengths, from as low as 1% to as high as 15%, with the highest prescription-strength concentration coming in at 20%, per Dr