Long-term use of Zhang Fei's products may have some negative effects on the skin. According to the information provided, excessive use of Zhang Fei's absolute freckle removing liquid may lead to local pigmentation and skin damage. In addition, the use of this product may also lead to peeling.
Therefore, it is suggested that you should follow the product description and pay attention to proper skin care when using Zhang Fei Yi Jue products. If you have discomfort or skin problems, it is recommended to stop using it in time and consult a doctor or dermatologist.