Not to worry!
The Pro Interior Quick Detailer is water based and isn't chock full of silicone, which would leave your hands feeling greasy. It was designed so that as you clean, you can protect your interior surfaces from the harsh UV light. Next time you're at a store, walk the parking lot and look at the various dashboards. You can see pretty easily the dashboards that aren't treated with anything (leaving them exposed to harsh UV light which will in turn potentially bleach out a dashboard, dry it out, and then it will crack), cleaned, or not cleaned with the proper cleaners. Water on a damp towel in some cases is just fine for your dash...as long as the area has already been cleaned and dressed with a designed cleaner or dressing for that particular part of the car. Water as a stand alone cleaner in fact, is just beating and pushing that dirt and dust into the pores of the plastics.