I've seen the ones in the yellow bottle on the forum. Maybe I can find a pic. I think this is the one? A few people use it to actually attach the system because it holds fairly well (except for border areas as was said) and washes our in the shower for super easy clean up and attachment. It is supposed to be used in as a spiking gel that holds anything up, from front tips to mohawks. So it can hold a system on decently.