Frisco the Witch Hazel is more for rhoids cause it will also help shrink them. I never got rhoids cept on one of my 40 dayers where I decided to turn the last week into a colon cleanse using OxyPowder and I tell ya that was the mother of all rhoids where even walking was painful.
If the soreness is rash like I would hafta agree with Ailsa that it most likely is from some of the acidic matter from detox and bacteria. When I do the MC I get these baby wipes with Aloe from Whole Foods and they really help keep you nice and clean and the I'm sure the aloe helps to soothe any skin irritations. I'm sure it also contains some kinda antibacterial voodoo
I'm a canoe tripper and wearing tight wet neoprene all day makes an inviting home for bacteria in your hoohaa, wazoo or Mr happy areas ;+D and you get some nasty painful rashes when your paddling all day and that can certainly make for and unpleasant trip. The Aloe baby wipes come with me on every trip and it has made all the difference in the world.