Dandruff is caused by dead skin shedding from the scalp and flaking off throughout the hair. While dead skin and dry scalps are a common problem, dandruff can be caused by overexposure to extreme heat or cold or even the use of too many hair products, like sprays or gels.
Prevent dandruff by dabbing mouthwash on your scalp with a cotton ball. Leave on for 30 minutes; then shampoo normally. Make it a part of your shower routine to apply mouthwash after shampooing and before conditioning. Regular use can control a dandruff problem and eliminate bacteria in your hair and on your scalp.