I thought it was a hair problem, but later I changed a shampoo, which lasted for 3 days before shampooing.
After that, the shampoo was Xia Shilian, what was her name again? Multi-effect shampoo for dandruff control and oil control (the name is very long, I can't remember it clearly ...). The green cover and pattern are peach blossoms and cherry blossoms.
Both supermarkets and Watsons sell them. You can try it and it's not expensive.
It began to take effect after two or three uses.