I have a couple pairs of gloves, they are both in good condition and clean...but they have lost their grip. They are both slick and I can only get a decent grip if I keep them wet. Any suggestions as to regenerating or replenishing the "tackiness" of the latex?
Well, you should always keep your gloves damp when playing. As you said, it brings out the grip in the latex, & dry latex tends to tear quicker than damp latex. It is nearly impossible to regenerate a grip once the latex has gone south, however. The best thing you can do is wash your gloves after every use with lukewarm water & possibly a good glove cleaner if they are really dirty. Using the wrong detergent can wreck the grip, as different chemicals can affect the latex differently, some with disastrous results! Check out http://www.betweenthesticks.com & http://goalkeeperzone.com/kzforums for more info & glove choices.
It really can't be helped - latex will eventually turn hard and slick just from age. You just have to consider goalie gloves disposable items.
There is only one product that actually works to restore goalie glove grip and it actually improves longevity. It's Keeper Balm. https://keeperbalm.com/ I put it on all of my gloves, as soon as I get them. It's highly permeable and keeps your gloves from getting dry and brittle. I live in Florida and leave my gloves in the trunk all the time. Keeper Balm keeps them from drying out and gives them a better grip than new gloves. No exaggeration.