In detergent formulations, HPMC (Hydroxypropyl Methyl Cellulose) serves several purposes due to its unique properties. Here's how it can be used:

1. Thickening Agent: HPMC is often used as a thickening agent in liquid detergents. It helps in achieving the desired viscosity of the detergent solution, improving its appearance and making it easier to pour or dispense.

2. Stabilizer: HPMC helps stabilize the detergent formulation by preventing phase separation or settling of solid particles. This is particularly important in concentrated or gel formulations where different components may tend to separate over time.

3. Water Retention: Similar to its role in cement mortar, HPMC can help retain water in detergent formulations. This ensures that the detergent remains effective even after prolonged storage and helps prevent it from drying out.

4. Film Formation: In some cases, HPMC can contribute to the formation of a protective film on surfaces cleaned by the detergent. This film can provide additional benefits such as improved shine or protection against re-soiling.

5. Suspension Agent: HPMC can help suspend solid particles or insoluble ingredients in the detergent solution, preventing them from settling at the bottom of the container.

6. Texture Modifier: Depending on the grade and concentration used, HPMC can also modify the texture of detergent formulations, giving them a smoother or more gel-like consistency.

When incorporating HPMC into detergent formulations, it's essential to consider factors such as compatibility with other ingredients, desired viscosity, and performance requirements. The appropriate dosage and mixing procedure should be determined based on the specific formulation and application.

HPMC is a versatile additive that can improve the stability, texture, and performance of detergents, making them more effective and user-friendly.