Hetty. Cosmetologist. Amsterdam. A skin therapist offering tailored facial treatments and custom skincare advice. Focuses on healthy, balanced skin with products matched to each client. Cosmetologist. Amsterdam. A skin therapist offering tailored facial treatments and custom skincare advice. Focuses on healthy, balanced skin with products matched to each client. Cosmetologist. Amsterdam. A skin therapist offering tailored facial treatments and custom skincare advice. Focuses on healthy, balanced skin with products matched to each client.