The material has a very good capillary action. It depends on porous material to enhance it's strength. The more it (CA, (CyanoAcrylate)) (sucks-into) a material the better it bonds. Paints tend to inhibit CA's ability. There are at least three different thicknesses/viscosities of CA. Thin set has the best penetrating ability. Thick/or slow set, may be the least. Bonds tend to be brittle/little flexibility, may be a reason you see variations, like Gorilla Glue, that morf a CA bond with other types of adhesives. IMO. Mike CT.
There are precautions, Avoid skin and eye contact, are the most noted. Some cases a trip to the emergency room is in order to un-glue eye lids or the like. Be careful with this stuff. 
