not to back track to the icy hot on the nuts topic, but then again this could slip in under the nudity and hygiene - freshness is confidence? ;-)
When I was at a large camping event (hash house harriers), I was showering at the public, open air showers near a guy and said to him, "Hey, try this down there," and handed him some of my shampoo. He tried it and loved it and spent the next couple hours telling everyone in camp that I made his balls happy and tingly. No one in the camp knew me before this weekend so they were quite curious about me (new meat, I suppose) and this made an interesting first impression if nothing esle.
Soon, everyone was asking me if I would do that to them, so I made a public announcement, "Anyone - men or women - wanting their privates to feel clean and tingly follow me." Lo and behold everyone within hearing distance - about 20 people - did. I marched them down to the public showers.
"Strip nekkid, please" They did...I felt so powerful.
"Stand on the wood pallets." These were set out under the five shower heads to keep feet clean. (By the way, this was a semi wooded area, a huge horse barn about 40 feet away).
"Everyone stick out your hand." They did. I put a dab of shampoo in each one.
"Everyone, wash your privates with it. Men, you will feel the sensation sooner than the women, but, women, I think you might be having a finer experience when the feeling comes."
Sure enough, in minutes, everybody was oohing and aahhhing and washing their privates and sounding like an Herbalessence commercial.
The secret shampoo: Tea Tree Oil Shampoo. Great stuff. It makes you tingle in a clean happy way, powerful clean but not a burn feeling. Like the way you feel after chewing doublemint gum but the other end. The feeling is enhanced by sensation so some people bent over in front of the power fans in the barn and squealed with pleasure. You can wash with the shampoo before getting into a pond and the water swirling around takes on a new level of pleasure.
Good stuff to share with a new partner before hand, particularly in a camping situation when either person/both people might not be so fresh. The shampoo doesn't kill STDs but it does have antiseptic and antifungal properties. ;-)
I just might have to bring some to the playa.