What Dissolves Hair In Drain May 2026

Thus, “dissolves” in consumer terms means “breaks down enough to no longer clog.” | Pipe Type | Lye (NaOH) | Bleach (NaOCl) | Acid (H₂SO₄) | |-----------|------------|----------------|---------------| | PVC / ABS | ✅ Safe (moderate heat) | ✅ Safe | ⚠️ Risk: heat can warp | | Copper | ⚠️ Possible pitting over time | ⚠️ Corrosive | ❌ Dissolves copper | | Galvanized steel | ✅ OK | ✅ OK | ❌ Rapid corrosion | | Cast iron | ✅ OK | ⚠️ Can degrade old seals | ⚠️ Risk of hydrogen gas | | Old (1930s) brass | ⚠️ Moderate | ⚠️ Moderate | ❌ Dezincification |