Why Does My Face Turn Red After Vitamin C? (And How to Fix It Without Damaging Your Skin) Quick Expert Answer (Featured Snippet) Your face turns red after vitamin C because your skin barrier is compromised, your formula is too strong or acidic, or your skin is dehydrated and reactive. To fix it, pause use, … Continue reading Why Does My Face Turn Red After Vitamin C? (And How to Fix It Without Damaging Your Skin)