Sting-Free Formula Healthy Relief Relieves Dryness, Clears Redness, Soothes & MoisturizesEye Doctor recommended Similasan Dry Eye Relief stimulates the eye"s natural ability to fight dryness and clear redness due to smog, stress, age, fatigue, environment, contact lens wear, and other causes.The active ingredients in Similasan Eye Drops work effectively with no known side effects and no known drug interactions. Similasan Healthy Relief products have provided safe, effective relief to millions of people for over 25 years. Uses: According to homeopathic principles, the active ingredients in this medication temporarily relieve minor symptoms such as: Dry eye Redness of eyes and lids Reflex watering secondary to dry eye Sensation of grittiness Sensitivity to light