1. Change the bad habit: If you used to pull the hair on the top of your head, this habit is probably the chief culprit that leads to no hair in the whirlpool on your head. Try to get rid of this habit and let your hair grow naturally.

2. Choose a hairstyle that suits you: You can consider choosing some hairstyles that can cover the whirlpool, such as leaving some bangs or parting your head. This will make the whirlpool on your head less obvious, and at the same time cover up your previous bad habits.

3. Keep the scalp healthy: The health of the scalp is very important for hair growth. You can choose some mild shampoo products and avoid products containing irritating ingredients. In addition, it is also important to keep the scalp clean and dry.

4. Accept hair transplant surgery: If you have tried the above methods, but the effect is not obvious, you can consider accepting hair transplant surgery. Hair transplant surgery is a method to improve hair style by transplanting healthy hair follicles to the parts that need hair transplant. However, it should be noted that hair transplant surgery needs to be carried out in a professional hospital or institution to ensure safety and effectiveness.

In short, it takes patience and persistence to improve the problem of no vortex on the top of the head, choose a method that suits you and maintain good living habits. I believe you can harvest a healthy hair.