Well, this has been a topic for a long time. I do have a giant bottle of Coolpiece cream glue and it is very good for the front of the lace unit and I was pretty comfortable using it for the entire bond for quite some time. I now prefer to use the Ultra Hold for the front. The Coolpiece glue is only water "resistant". My hair length is better than 5"and a normal routine of swimming, showering or getting caught in the snow or rain paired with 50 mph winds lends itself better to a "waterproof" glue such as Ultra Hold. That daily abuse while using ST-30 (perimeter)and UH(front)gives me pretty close to a three week hold with just a few front touch ups and a killer bond.

I hope that this helps,

Zap