According to Fang Xin Qingyan official website, Fang Xin Qingyan products have certain safety, and the ingredients are pure plants, which can lighten the spots. However, for people with individual skin types or special constitutions, some adverse reactions may occur after use. As for the effect, Fang Xin Qing Yan products can lighten the spots, but the spot problem is the result of skin pigmentation, which is difficult to completely remove, so it will take some time to see the obvious effect. Generally speaking, Fang Xin Qingyan products can be used for skin care, but skin tests should be conducted before use. If you have any discomfort or questions, you should consult a professional doctor or dermatologist.