This is normal. It's not that it won't grow long after a hair removal, but the long hair is thinner than before. The effect of doing it once is getting thinner and thinner, and eventually it will disappear, but some people will grow some tiny hairs. You can't tell without looking carefully.

(Dr. Luo Jialin from Badachu Plastic Surgery Hospital solemnly reminds: Because I can't see the patient face to face, I can't fully understand the condition. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )