6. 物理与化学伤害
烫染与日照都有可能损伤头皮与毛囊，引起发色的改变。平日里避免过度烫染，做好防晒措施，会有助于新发健康的生长。
只要不是基因或者疾病引起的
大多白发问题都是可以改善的
如果实在无法改变
也希望你可以接受不一样的自己
白发总比脱发要好吧 [看]
参考资料：
1. Kumar, Anagha Bangalore et al. “Premature Graying of Hair: Review with Updates.” International journal of trichology vol. 10,5 (2018): 198-203. doi:10.4103/ijt.ijt_47_18
2. “White Hair: Causes and Prevention.” Healthline, Healthline Media, 18 Sept. 2018, www.healthline.com/health/white-hair.
3. “How Stress Causes Gray Hair.” National Institutes of Health, U.S. Department of Health and Human Services, 11 Feb. 2020, www.nih.gov/news-events/nih-research-matters/how-stress-causes-gray-hair.
