Hi ya Debs,
Well here is another theory..................
Maybe this could be it?????
Do you activate the bond(resin1)?????
If so it could be that when brushing on build, it will pick up some of the activator and when putting the brush back in the bottle could contaminate it......
It wont go gloopy right away, but do this a few times and it will..........
Just a thought, hope this sheds some light on it ..........
Also why do you wipe the nails after you have activated them ?????
You mean between bond, build and boost???
There is no need for that, as long as your fingers dont touch the overlays there is no risk of human contamination, unless you sneeze on top of them lol............. Sorry I thought this was funny .......
love Ruth xxxx