What product is often used to add shine to finished hairstyles?

Hair serum or shine spray is commonly used to add shine to finished hairstyles due to its formulation, which typically includes light-reflecting ingredients and oils that provide a glossy finish. This type of product is designed to enhance the overall appearance of hair by making it look healthier and more vibrant.

Hair serums and shine sprays are usually lightweight, ensuring that they don’t weigh the hair down or create a greasy appearance. They can smooth flyaways and provide a polished look, which is why they are favored for achieving that shiny, finished effect after styling.

In contrast, other products like hair gel, mousse, and wax have different primary functions. Hair gel generally provides hold and structure, hair mousse adds volume and body without necessarily contributing to shine, and hair wax helps with texture and control but may not create the same shine as a dedicated serum or spray. Therefore, for the specific purpose of adding shine, hair serum or shine spray is the most appropriate choice.