2. If the skin on both sides of the cat's forehead is normal and there are no symptoms such as redness and dandruff, there is generally no problem, and it is difficult to improve it through acquired treatment.
3. If cats are found scratching their foreheads, and the skin has secretions and scabs, it is likely to have skin diseases. You can give the cat a tabletop microscopic examination or laboratory culture, determine the cause, and then treat the symptoms.