Bio True Multi-Purpose Lens Solution helping contact lenses stay clean and moist throughout the day. Helps to protect the health of eyes, fighting germs and bacteria. Creates a cushion of hydration between the lenses and the eyes. Helps condition and hydrates the lenses. It is pH Balanced to match healthy tears, which makes wearing contacts even more comfortable. Disinfects and cleans lenses overnight and removes protein deposits. Directions: Place at least three drops of the solution on each side of the //lens surface and rub gently for 20 seconds. Thoroughly rinse both sides of the lens for at least 5 seconds. Add fresh solution to the lens case and soak the lenses for at least four hours before use. Pack contains 2 lens solution bottle 300 ml and 120 ml.