Oklahoma Cosmetology Board Practice Exam

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What is a common ingredient in shampoos designed for oily hair?

Tea tree oil
Coconut oil
Jojoba oil
Olive oil

The correct answer is: Tea tree oil

Shampoos formulated for oily hair often include tea tree oil due to its natural antimicrobial and antifungal properties, which help to reduce excess oil and combat dandruff. Tea tree oil is known for its ability to cleanse the scalp deeply, removing oil and build-up without stripping the hair of its natural moisture, making it particularly effective for those experiencing oiliness. In contrast, coconut oil, jojoba oil, and olive oil are typically more moisturizing and nourishing agents. These oils can be beneficial for dry or damaged hair, as they help to condition and add moisture. Therefore, while they play important roles in various hair treatments, they are not common ingredients in shampoos specifically designed to address oily hair issues.