You have to be careful when you buy health products, especially that you might use in sensitive areas, like your eyes. In 1986 I was interested in the herb Eyebright. Eyebright has been used at least since the 1300s as an eye rinse and to help with eye strain and diseases of the eye. In 1986 I got it in powder form in cellulose capsules. One day, I was about to open a capsule and use it as an eye rinse, when I read the ingredients. It had cayenne pepper in it. I don't think I would have wanted to have used it as an eye wash.
Like most people. If you were being stitched back together following an accident, no doubt you would be horrified if the nurse popped a few maggots in before she closed the dermis layer. However, without blood flow tissue dies until it reaches the sutures. So as flesh rots away where it has been torn (rather than surgically cut), the resultant pathogenic bacteria consuming it, can lead to septicemia. The maggots simply eat the dead tissue, then die of starvation. This process, often accidentally, has been used in eastern parts of the word for centuries. In order to preserve the outer layer of your eyes, lubrication is required. In todays relatively dust free society our body has no need to wash the dust out, so tear ducts become less active and can block. Being natural and chemical free, cayenne pepper is ideal for getting you crying again without any side effects.