How do I remove corn starch from the corona, frenulum, and neck of penis. I accidentally had an incident with corn starch and now its stuck to the locations mentioned. I tried using warm water and soap but they don't appear to dissolve it away. It's too sensitive to scrub away. In addition, I can't find any solution online that would dissolve it without heavy duty chemicals which most requires scrubbing the area. It doesn't irritate at all, just looks unpleasing. Note: uncircumcised.