Hair shampoos belong to which class of synthetic detergent ?

Explanation

To answer the question regarding which class of synthetic detergent hair shampoos belong to, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Synthetic Detergents**:
- Synthetic detergents are classified into three main categories: anionic, cationic, and non-ionic detergents. Each class has different properties and applications.

2. **Identifying the Active Ingredient in Hair Shampoos**:
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