In high school, I also went on a diet to lose weight. I lost weight, but my hair fell off badly. Originally, my hair was bright and black, and I didn't lose it. I grabbed it after dieting, and it was dry and yellow. I regret it! ! ! My classmates say that my hair is much less than before, and it is not as supple as before.
Later, I resumed my life before losing weight. Shiny black hair is back. Hair should also be nutritious. If you don't eat yourself, you won't eat your hair! ! !
However, if it is not the above reasons, it may be the climate difference. But I still think it's because of diet ~ ~