Post-inflammatory Erythema (PIE) appears as persistent red or pink marks on the skin after a pimple heals. Our Acne Control Serum is rich in anti-inflammatory Niacinamide, which helps soothe the dilated blood vessels responsible for this redness. It accelerates the fading process and restores a calm, even appearance to your skin. Don't let red marks linger for months; use a serum designed to speed up skin recovery and promote a more uniform, healthy-looking complexion daily.