Here is a hair salon in Berlin which is nice, they also carry Keracare products:
Timeless Beauty Supply
AusburgerStr. 29
10789 Berlin
Tele-(030) 88 62 59 88
The salon in Stuttgart also carries hair products, weaves, phonytails:
Afro American Cosmetic Shop Cosmetic
Silberburgstr. 138A
70176 Stuttgart
(07 11) 6 15 04 79
and then there is this one:
AFRO Nancy's Nagel- und Haarverlängerungsstudio
Gerberstr. 13
70178 Stuttgart
(07 11) 9 64 12 02
HTH!