A cleanser is a different kind of product
Soap is a rinse-off format. The role of its cleansing system, the finished product’s pH and the length of skin contact differ from a serum or a cream. The name of an added ingredient cannot describe the entire washing experience.
A crossover study on washing
Korting and colleagues (1987) studied ten healthy volunteers who washed forehead and forearm with soap and synthetic detergents over successive four-week periods. Skin pH was higher during the soap period, and some bacterial counts differed. The small study concerned those washing preparations; it did not test snail mucin soap.
What this does and does not tell us
The study supports asking questions about the finished cleanser rather than relying on an attractive ingredient alone. It does not show that all soap is unsuitable, that this product has a particular pH or that an ingredient cancels the effects of a cleansing base.
For the soap in this catalogue
Ask for the current finished-product ingredient list, bar weight and directions. Use it as a rinse-off product and assess your individual skin tolerance. No trial of this exact soap was identified in the research reviewed for this website.
Study references
Korting et al., 1987 · Acta Dermato-Venereologica · washing crossover study
Research reviewed: 13 October 2026. This is an educational explanation of the cited studies, not personal medical advice or a clinical test certificate for the catalogue products.