The following study found that 5% KOH aqueous solution proved to be as effective and less irritating when compared to the 10% KOH solution. This trial also emphasizes the effectiveness of topical KOH in the treatment of molluscum contagiosum, sparing affected children from more aggressive physical modalities of treatment.

Pediatr Dermatol 2000 Nov-Dec; 17(6):495
Evaluation of the effectiveness of 5% potassium hydroxide for the treatment of molluscum contagiosum.Click here to access the PubMed abstract of this article.