ELDER-FRIENDLY (cream-based) and WITHOUT DRYING YOUR SKIN (non-alcohol-based). Within the first 15 seconds, Zytrel goes to work killing 99.99% of germs on contact and continues to help kill germs for up to 4 hours, without inhibiting natural flora (your body’s natural good bacteria).  Zytrel XP complements or exceeds the Center for Disease Control (CDC) standards for clean hand hygiene.