Understanding Hydration vs Barrier Repair (Why This Comparison Matters) Hyaluronic acid and arginine are not competitors with a proven universal winner. Both have formulation-specific research, but the evidence discussed here does not directly compare them or establish that one hydrates briefly while the other permanently repairs skin. In this guide: What Hyaluronic Acid Actually Does … Continue reading Understanding Hydration vs Barrier Repair (Why This Comparison Matters)