Polyquaternium-7 is a type of cationic polymer commonly used in cosmetic formulations. It is known for its conditioning and moisturizing properties, making it a popular ingredient in hair care products such as shampoos, conditioners, and styling products.

In cosmetic descriptions, polyquaternium-7 may be highlighted for its ability to:

1. **Condition Hair**: It helps to improve the texture and manageability of hair by reducing static and enhancing smoothness.

2. **Moisturize**: Polyquaternium-7 helps to retain moisture in the hair, preventing dryness and improving overall hydration.

3. **Detangle**: It aids in detangling hair strands, making combing and styling easier.

4. **Enhance Shine**: By smoothing the hair cuticle, polyquaternium-7 can impart a healthy shine to the hair, enhancing its appearance.

5. **Protect**: It can provide a protective barrier on the hair shaft, helping to shield it from environmental stressors such as UV radiation and pollution.