Benzene is a known carcinogen and should be avoided in any personal care products, including dry shampoos. Fortunately, many brands now offer benzene-free dry shampoos that are both effective and safe to use. When choosing a dry shampoo, I recommend looking for products that explicitly state they are benzene-free or free from harmful chemicals. Additionally, it's always a good idea to read the ingredient list to ensure there are no benzene-containing compounds present. Some clean beauty brands known for their benzene-free dry shampoos include:

1. Acure Dry Shampoo
2. Captain Blankenship Mermaid Dry Shampoo
3. Rahua Voluminous Dry Shampoo
4. Innersense Organic Beauty Refresh Dry Shampoo
5. Briogeo Scalp Revival Charcoal + Biotin Dry Shampoo

Remember, it's important to prioritize not only the absence of benzene but also the overall safety and effectiveness of the dry shampoo. Look for products that use natural and non-toxic ingredients to maintain the health and integrity of your hair and scalp.