Use Retin-A exactly as your doctor has prescribed it for you. Follow all directions on your prescription label. Do not use this medicine in larger or smaller amounts or for longer than recommended. Do not take by mouth. Retin-A is for use only on the skin.
Definition of wall for English Language Learners : a structure of brick, stone, etc., that surrounds an area or separates one area from another : the structure that forms the side of a room or building
chinese wall. noun barrier, detachment, disconnection, disunion, dividing wall, division, grouping, impenetrable barrier, isolation, partition, safeguard, secure separation, segmentation, severance, shield, total separation. Associated concepts: Chinese wall between clients, conflict of interest, conflicts of interests.