Heredity is the main factor leading to the occurrence of freckles. Hereditary freckles can be improved by strengthening sun protection, medication and laser treatment. 1. Strengthening sun protection: Excessive exposure to ultraviolet rays will aggravate the freckles on the face of patients, and in addition, it will also lead to hyperpigmentation on the rest of the face. Therefore, if you want to improve the freckles, you should pay attention to strengthening sun protection measures, for example, when going out, you can use hats, masks, umbrellas, sunglasses, sunblock, sunscreen, sunblock spray, and other sunscreen products to help insulate the ultraviolet rays. 2. Medication: For patients with milder symptoms and lighter color of hereditary freckles, they can use trichloroacetic acid solution, phenol and other medicines for local spot coating to help local corrosion of freckles, so that the local epidermis of freckles is peeled off to achieve the therapeutic purpose; they can also be coated with hydroquinone cream, retinoic acid cream, vitamin E cream and other medicines to help lighten the freckles, but it cannot eliminate the freckles completely. 3. Laser treatment: With the development of photoelectricity technology, many kinds of laser treatments can be used for freckle treatment and have better effect, which can help to improve the freckles caused by heredity, such as: frequency-doubled Nd:YAG laser, ruby laser, emerald green laser, IPL intense pulsed light and other laser treatments are often used to treat freckles. It should be noted that the above treatments should be carried out under the guidance of physicians to avoid the occurrence of adverse reactions.