The shells on the outside of Old Shanghai Hands Clam Oil are real. It's the shells of clams from Laizhou, Shandong Province.

Clam oil, is the use of clam skin as the outer packaging of the skin care oil, inexpensive, belong to the mass skin care products. In the early years, clam oil was sold in Shanghai and Shandong, with shells of basically similar size at the same price point.

Laizhou is located in the Bohai Sea on the south side of Laizhou Bay, abound in flower skin clams, usually dissected out of the clam meat to make soup, taste delicious. Because of the smooth texture of the shell, it was used as an outer packaging for cheap skin care oils at the time.