Germaben II is a a great preservative for formulas containing water such as lotions, shampoos, hair conditioners and more. DIRECTIONS: Slowly stir into liquids at a temperature below 140°F (60°C). Recommended use levels are 0.5-1% of total formula weight. This product preserves products made with LESS THAN 25% oils and pH levels between 3 and 7.5. TIPS: This product is heat sensitive and should be added at a temperature of 140°F (60°C) or below. STORAGE: Store in an airtight, cool, dark location. When stored properly, best used within 2 year from opening.