Slight pigmentation and freckles can be removed by general treatment and physical treatment. 1. General treatment: patients with pigmentation spots and freckles should pay attention to sun protection, usually use some sun protection products, such as using sun protection products when going out, such as umbrellas, hats and masks, etc., and also use sunscreen, etc., and pay attention to skin hydration and moisturizing. 2. Physical therapy: Commonly used physical therapy modes are Q-switched ruby laser, Q-tuned emerald green gemstone laser, photorejuvenation, etc. After the operation, attention should be paid to sun protection so as not to cause hyperpigmentation. If you want to remove minor pigmentation and freckles, you can go to professional hospitals to avoid self-treatment, which may cause serious consequences.