But as we age, there's declining levels of catalase, and this allows the build-up of hydrogen peroxide in the hair bulb, which damages and destroys the melanocytes, or the pigment producing cells, of our hair.

但随着年龄的增长，过氧化氢酶的水平会下降，这会导致毛球中过氧化氢的积聚，从而损害和破坏头发的黑色素细胞或产生色素的细胞。