How do you deal with humidity?

I noticed some rubbers (chinese especially) are prone to humidity. The others also but to a lesser degree (Mark V, for example).

I live in the Philippines and tournaments are held indoors usually without AC. Late in the afternoon I notice the rubber having a slick film on it. Even if I wipe it off it comes back. This is on an LKT Pro XP rubber. Someone told me it's the same with many of the tacky Chinese rubbers even Xiom.

Recently I purchased a Donic Vario still I noticed the same phenomena. 

Humidity can really have a negative impact on your game especially if you are a looper. 

How do you deal with this? Someone suggested using Spinmax. Haven't tried that yet.

Thank you and more power to you and your website. Happy holidays!