Originally Posted by
Tizzette
You can use hotel shampoo for detergent, or just bring some powdered detergent in a baggy.
Gel is kinder on the hands than powder (and can easily be purchased in Europe - look for
Rei in der Tube in German-speaking countries, for example).
And for those who want to fly and not worry about liquid restrictions there is detergent that comes in little sheets - haven't seen it in Europe, though (bought some in Canada earlier this year)