The 411 on Pore.remedy ✨ PHA ✨ Exfoliating Serum 🧪⤵️ | Snatch pores + visibly reduce blackheads 🤝 without irritating sensitive skin. ➕ Pore.remedy Serum contains 7% PHA, making it gentle enough for every day use. ➕ What is PHA? A chemical exfoliator with a large molecular size than AHAs + BHAs - which effectively exfoliates dead skins cells to reduce unwanted texture + blackheads, without causing irriation.