If your taps are covered in dirty finger smudges, then use this guide on how to clean them with only using water and no chemicals:
1. Firstly, this method is to only clean smudges from the tap. This will not clean any limescale, bacteria or other dirt from the tap.
2. Take a PVA micro cloth and dampen it with water. Make sure to thoroughly wring the excess water from the cloth before using, otherwise the cloth will not perform as well.
3. Take the PVA micro cloth and wipe the tap where there are smudges. To start with, the cloth will leave smears, but within seconds they will disappear to leave a crytal clear appearance.