Back bar
A back bar is the cabinet or shelving behind the shampoo area that holds shampoos, conditioners, towels and treatments within reach of the bowls. In salons the phrase also covers the large professional bottles used during services, as opposed to retail products.
Buy-Rite Beauty sells shampoo back bars alongside bulkhead units, which hide the plumbing lines behind a row of bowls. A back bar used only for storage may need no plumbing at all, so it can go wherever the bowls sit.
The salon floor plan maker includes a 48 by 20 inch back bar cabinet. Put it behind your backwash units and close to the color bar.