Which type of hair styling product is designed to give a firm hold for hairstyles?

The product that provides a firm hold for hairstyles is gel. Hair gel is specifically formulated to enhance texture and provide structure to the hair, allowing for styles to maintain their shape and integrity throughout the day. It contains polymers that create a long-lasting hold upon application, making it an ideal choice for achieving defined styles such as spikes, slicked-back looks, or any hairstyle that requires extra firmness to stay in place.

In contrast, a leave-in conditioner is typically focused on providing moisture and detangling benefits rather than hold. Spray serums are designed to add shine and a smooth finish without a significant holding capacity. Hair mousse often provides volume and body but typically offers a lighter hold compared to gel. Therefore, gel is the best option for those seeking that firm styling hold.