Waldo's new hydration drops are homeopathic sterile eye drops. I recently learned that traditional eye drops contain preservatives that over time can damage your eyes. I've never been a big eye drop user but Mr. D J R is. There was a recent Reddit feed, about the use of eye drops which led down a rabbit hole of a discussion about the chemicals in eye drops. What I didn't know was that the relief you see and feel is due to chemicals like Tetrahydrozoline or Naphazoline hydrochloride known as vasoconstrictors. According to Waldo, "....vasoconstrictors constrict the muscular walls of the eye, shrinking the blood vessels to reduce the appearance of redness. With extended use, vasoconstrictors can cause rebound redness and even make the problem worse." Waldo Hydration Drops work to target the root cause of the problem. The natural active ingredients in their eye drops support your eye's own ability to heal itself instead of masking the problem only to have to deal with a larger more severe eye issue later.