Our Ionic Silver Hydrosol is 10 PPM which is the preferred strength for overall, general use. Easily absorbed . Our product has tremendous benefits and is excellent for daily use.Most Important Product For Your Health! Doesn’t expire.AFFORDABLE: Proprietary lean manufacturing process results in a perfect high quality affordable product. Our Hydrosol is superior in quality. You will become a repeat customer !HIGHEST BIO-AVALABILITY: Micro particles (sub nano-meter in size- .8nm) are positively charged (the only effective kind) and can be used quickly.This product is not intended to diagnose, treat, cure or prevent any disease.