Anti-frizz serums are hair care products designed to reduce frizz and enhance smoothness in hair. They typically contain ingredients like silicones, oils, and humectants that help to seal the hair cuticle, preventing moisture from entering and causing frizz. These serums can be applied to damp or dry hair, providing a sleek finish and making hair more manageable. Using an anti-frizz serum can be especially beneficial in humid conditions, where frizz is more likely to occur. Regular application can also improve the overall health and appearance of hair, making it look shinier and more polished. Many serums are lightweight and non-greasy, ensuring they do not weigh hair down.