CL Crystal is particularly suitable for excessive or heavy sweating. The antiperspirant consists of only one active ingredient, alum, an aluminum-containing mineral salt. The CL Deo Crystal is odorless, contains no additional ingredients, and is therefore extremely well-tolerated.

The CL Deo Crystal is pH acidic, meaning that perspiration is regulated by constricting the sweat pores, resulting in less sweat being produced. Alum also has antibacterial properties, which inhibit the growth of sweat-decomposing bacteria and thus prevent unpleasant odors. In this way, the antiperspirant works reliably and sustainably.