Received the sponge is wet, is this a normal phenomenon?

The wet material of sponge is water, in order to ensure that customers can use it directly when they get it. Also if you are not in a hurry to use, do not unpack the residue package to prevent it from drying out.

Is there use&care instruction about this item?

If the sponge is already dry, please soak in water to soften before use. After each use, squeeze dry. Always test small area before use. Do not use it with abrasive cleaner.