New Biotrue Hydration Plus still gives you up to 20 hours of hydration.1 But it also has 25% more HA2 plus an electrolyte and antioxidant3 to help keep more moisture on lenses for the first 12 hours.1,2Click here to compare them side by side. 1. Compared to Biotrue Multi-Purpose Solution 2. Based on a laboratory study 3. Antioxidant protects hyaluronan against free radicals