Chengjie Wei

3 weeks ago | onlinelibrary.wiley.com | Chengjie Wei |Xiaomin Hou |Xuelu Jiang |Ming Gao

1 Introduction Hair greying, also known as canities, is one of the most common phenotypic and apparent ageing-associated occurrences in humans [1]. Typically, the onset of hair greying happens at the ages of 34.0 ± 9.6, 43.9 ± 10.3 and 39.0 ± 9.0 in Caucasians, African Americans and Asians, respectively [2]. Scalp hair is vital for sustaining individual self-confidence and self-esteem [3].