Which product is commonly used for adding shine to hair?

B is the appropriate choice for a product commonly used for adding shine to hair. Shining spray is specifically formulated to enhance the luster and radiance of hair, often containing ingredients that coat the hair strands, reflecting light and creating a glossy finish. This type of product is especially popular for use on styled hair or after blow-drying, as it gives the hair a polished appearance.

In contrast, hair mousse is primarily designed to add volume and hold to hair without necessarily imparting shine. Dry shampoo is used to absorb excess oil and refresh hair without water, and while it can help in managing the hair's appearance, it does not contribute any shine. Volume powder is used to provide texture and lift, catering more to volume than shine. Hence, shining spray is the dedicated choice for achieving a shiny look in hair care.