I use a product called LensPen for my DSLR lenses. If needed, I will use it for the S22U Camera lens, as well.

• LensPen NLP-1 , Black
• LensPen New DSLR Pro Camera Cleaning Kit, NDSLRK-1 (if you have DSLR)
• Lenspen MK-2-G Microklear Microfiber Cloth