Zachary and the "homemade" Shampoo.....m

Zachary and his brother Timothy were outside having supersoaker battles yesterday in the front yard. They were in their swimsuits and chasing each other around the house. Then Zachary got his brain child idea he took the bubble mix he was using in his bubble sword and put in the bucket they were refilling the supersoakers with and made homemade shampoo. He told Timothy if they "washed" their hair with it they wouldn`t have to take a shower later. SO they both washed their hair with the bubble mix "shampoo". Only thing is Timothy is very sensitive to stuff like this ( he is allergic to bubble bath, can only use one kind of soap and shampoo) So he started itching all over. I told them they would have to come in and take a shower. Zachary and Timothy then said "another" shower we have soap we have water why do we need another shower. I had to laugh at that but Timothy`s head was itching so I made them take a shower and put on some more clothes. Timothy is not broke out but they won`t be mixing up anymore "potions". I was just wondering if any of your ds or dd have done anything like this? If they have I would love to hear about it!