Youssef A. Hairdresser. Amsterdam. Youssef specializes in men's and children's cuts with styling, offering beard care and men's coloring for a polished finish. Hairdresser. Amsterdam. Youssef specializes in men's and children's cuts with styling, offering beard care and men's coloring for a polished finish. Hairdresser. Amsterdam. Youssef specializes in men's and children's cuts with styling, offering beard care and men's coloring for a polished finish.