Rhode Island Cosmetology and Barbering Practice Exam

Silicone is an ingredient commonly found in hair products that effectively helps reduce frizz. It works by forming a protective barrier around the hair strands, which helps to lock in moisture and smooth the cuticle layer. This barrier minimizes the hair's exposure to humidity, which is a primary cause of frizz. The silicone also adds shine and a silky texture to the hair, making it appear healthier and more manageable.

In contrast, other ingredients listed, such as alcohol, water, and sodium chloride, do not provide the same frizz-reducing benefits. Alcohol can often strip moisture from the hair and lead to dryness, while water is a hydrating agent but does not have the smoothing properties that silicones do. Sodium chloride, commonly used as a thickening agent or preservative, does not address frizz directly and may actually exacerbate dryness in some cases. Thus, silicone stands out as the most effective option for combatting frizz and improving the overall appearance of hair.