IS there any risk of allergic reaction in creno-cosmetology?

High content of salts, which prevents the growth of pathogen microorganisms, is the main hallmark of mineral waters. This feature gives mineral waters and muds useful, long-duration self-preservative properties which allow for their utilization in both cosmetology and dermatology (as vehicles of pharmacological agents). As concerns cosmetology, broad possibilities of application of mineral waters have long been recognized, which are based on the eudermic properties of salts, the radioactive power of solutions and the bio-activating charge of suspendend colloidal substances. It is well know that the overall incidence of untoward effects from cosmetics is low and a thorough literature review did not detected any report of irritant/allergic reactions to mineral water-derived cosmetics. Considering the ever-increasing use of 'creno-cosmetics', these circumstances might be explained as follows: 1) so far, the problem has not aroused medical concern: or 2) cases have been overlooked or misdiagnosed; or 3) creno-cosmetics have no irritant/sensitizing potential.