Which ingredient in hair products helps to reduce frizz?

Silicone is a common ingredient in hair products specifically known for its ability to reduce frizz. It functions by forming a protective coating around the hair shaft, sealing in moisture and preventing humidity from entering. This coating helps to smooth the cuticle layer of the hair, making it appear shinier and less prone to frizz. The result is more manageable hair that resists the effects of external environmental factors that typically cause frizz, such as humidity and dryness.

Silicone derivatives can also add slip, making hair easier to detangle, and provide a smooth surface that enhances shine. Due to these properties, silicones are widely used in various hair styling products and treatments aimed at achieving a sleek look.

Other ingredients mentioned, such as water, alcohol, and gelatin, play different roles in hair care products. Water is primarily a solvent and base for formulations; alcohol can sometimes dry hair out and lead to frizz rather than reducing it, depending on the type; and gelatin is used for its protein content, which can strengthen hair but does not directly address frizz control like silicones do.