Made of biodegradable material, not sticky to hands, smell with good fragrance, no skin stimulation.It is safe and eco-friendly. Used to clean laptops, computers, phones, keyboard car air vent, dashboard, air conditioner etc. Catches over 80% of dirt, can effectively absorb dust and dust in the gap. While in use to absorb dust, the cleaning gel doesn't leave sticky or greasy residue on surfaces or hands.