Why does hair grow fast in subtropical areas?

Why does hair grow fast in subtropical areas? This is because:

1, the metabolism of the human body is relatively strong in summer, but it becomes slow in winter, and hair will suddenly grow in summer. At this time, paying attention to the care of the hair can make the furry hair recover quickly and grow a long black hair.

2, the weather is cold in winter, the pores are easy to shrink, the scalp will also shrink, and the hair grows slowly.

3. Cleaning scalp hair follicles and supplementing nutrition when washing hair is beneficial to hair growth, while washing hair less often in winter results in less nutrition and slow growth.

When shampooing, shampoo can clean dirt and grease in scalp hair follicles, while hair care products can supplement nutrition for hair roots, so proper shampooing frequency in summer can nourish hair and be beneficial to hair growth. If you wash your hair less often in winter, your hair will get less nutrition, so it will grow slowly.