1. Silicone-free shampoo: Choosing a silicone-free shampoo can avoid hair residue, reduce oil accumulation and help keep hair fresh.

2. Natural shampoos: Some shampoos contain natural plant ingredients, such as mint, rosemary and tea tree. It has cooling and anti-inflammatory effects, and can reduce scalp oil secretion and odor.

3. Scalp Massager: Using scalp massager can stimulate scalp blood circulation, accelerate sweat distribution, reduce oil accumulation, and help keep hair fresh.

4. Dry cleaning spray: Dry cleaning spray is a cleaning product that does not need to wash hair with water. It can absorb oil from hair, reduce odor and is easy to carry. Suitable for traveling or when you need to clean your hair urgently.

5. Hair care essential oil: Some natural plant essential oils, such as lavender essential oil and lemon essential oil, have antibacterial and oil control effects and can be added to shampoo or hair care products to help reduce hair odor.

It should be noted that in addition to using these products, it is also important to maintain good personal hygiene habits, such as washing your hair frequently and drying your hair with a clean towel to avoid odor caused by stagnant sweat and oil.