First, I'm presuming these are Viper/Cigarmony programmed beads. You can't oversaturate. Its their nature to regulate RH so long as they have capacity to absorb or expel moisture. The only chance you have of oversturating is when water is clinging to the beads by surface tension, such as when you soaked them.

I live in Colorado, land of ambient RH in the 20's. I routinely soak my beads to charge them without a problem.