Hello Maine
Thank you for your question. Post inflammatory hyperpigmentation (PIH) or post inflammatory erythema (PIE) from acne is usually treated with q-switched laser or long-pulsed laser.
You can expect gradual lightening of the marks with repeated treatments. You can also combine laser treatment with topical retinoids and chemical peels for better results. There shouldn't be any scabbing from treating PIH or PIE.
Moles are usually removed with an ablative laser such as the CO2 or erbium laser. Hope this helps!
Regards,
Dr Jiwei Wu
