You are the same as me before. I was worried to death at first. It doesn't really matter. At the age of fifteen, the skin's recovery ability is still very good. First, I try not to raise my eyebrows. I also wash my hair with my head down, and it's easy to raise my hair lines. Secondly, even in the wet season, I have to apply lotion on my forehead, which will dilute the fine lines produced by drying. There are also many ponytails, which tie the hair in front to the back to help restore firmness. For girls, it helps to restore firmness. You are advised not to use anti-wrinkle products. Your skin is in a natural growth stage, but it is not good after use. As long as you pay more attention, develop good living habits and eat more vitamins, the skin on your forehead will tighten back. That's how I got here. I'm 23 years old. You must be fine.