Periogard ingredients contain: 0.12% chlorhexidine gluconate [N, N”-bis(4-chlorophenyl)-3, 12-diimino-2, 4, 11, 13-tetraazatetradecane-diimidamide di-D-gluconate] in a base containing water, 11.6% alcohol, glycerin, PEG-40 sorbitan diisostearate, flavor, sodium saccharin, and FD&C Blue. So it does not appear it contains SLS. However, it would be best to contact the company (Colgate) and ask directly.