Polyquaternium-2 is widely used in the personal care and cosmetic industry due to its conditioning and antistatic properties. It is commonly found in hair care products such as shampoos, conditioners, and styling formulations, where it helps to improve hair texture, reduce frizz, and enhance manageability. Its film-forming ability provides a protective layer on the hair shaft, preventing damage from environmental factors and heat styling tools. Additionally, it is used in skin care products to impart a smooth and soft feel, improving the overall sensory experience. Its compatibility with various formulations makes it a versatile ingredient in a range of cosmetic applications.