Hello / Hola,
I live in Wiesbaden, Germany .... very close to Mainz & near Frankfurt.
Hidekel, are you still in Mainz? I realize these threads are old.
There is a Dominican owned hair salon I found in downtown Wiesbaden:
Salon Latino
Oranienstrasse 42
65185 Wiesbaden
Tel.: 0611 3418878
Owner only speaks Deutsch & Spanish but she does have an employee who speaks English, Spanish and some Deutsch