Scientists see wetness as an effect of molecular attraction and human sensory perception. Water molecules stick to each other and to other surfaces through hydrogen bonding. This adhesion and cohesion cause water to spread out and form films on surfaces, which our skin detects as wetness. Neuroscience adds that wetness is partly a brain-created sensation, combining signals from temperature and pressure sensors to give us the feeling. So, wetness is both chemistry and biology in action.