Gradual yellow hairs are not necessarily clusters. It may be due to improper diet and care, or the hair discoloration caused by the cat's physical disease. You should pay attention to the cat's diet management and do not feed the cat food with excessive oil and salt content. Use pet-specific shower gel to bathe the cat. If the cat's body is abnormal, it should be sent to the pet hospital for examination and treatment in time to avoid aggravation of the condition.