What product is commonly used for defining curls?

Defining curls often requires a product that provides hold and structure without weighing the hair down. Gel or mousse is specifically designed for this purpose, as these products are formulated to enhance curl definition, boost volume, and give a lasting hold.

Gel typically has a firmer hold, helping to keep curls in place while maintaining their shape, whereas mousse is lighter and can add volume while softly defining the curls. Both products can provide the necessary texture and support to effectively enhance natural curls, making them popular choices for curl definition.

In contrast, hairspray is mainly used for finishing styles and adding hold to hairstyles, shampoo is for cleaning the hair and scalp, and conditioner serves to moisturize and detangle but does not provide the structure needed for curl definition.