It does not clog the stomata at all. It replaces the need for a humidity dome and keeps an even temperature through the leaves keeping the inside moist. Giving the stem a chance to root.

The product I use Anti-Wilt is better then leaf shine only because it does have vitamins, oils and minerals the plant needs anyway. It's fairly new to me I have only been using it for about 2 years but I have had great success with it.

I'm not sure about leaf shine but I assume there is something like that with it as well. After all if somebody uses it and kills their plants they would demand their money back and the company would be only have one chance to make a sale. (Just using logic).