It is difficult to distinguish various spots of different colors on the skin, whitening and spot removal products may not be reliable, not all spots can be treated by laser, and some may even be aggravated. Many people think that aged vinegar and soy sauce will make the spots deepen, but there is no scientific reason and no need to pay special attention to it. So what are the spots of each color and can they be removed? Will it leave marks and scars if removed? Will they recur? A. Pigmented nevus Black nevus can be found all over the body, the scientific name is pigmented nevus, the face has more cosmetic needs. They are related to heredity and grow rapidly during adolescence, and generally stop growing after 35 years old. In fact, there is no such thing as “mother” mole, and a large mole will not give birth to a small one. Don’t expect to solve all the problems by dealing with the largest pigmented mole, if you want to remove it, you need to crack each one. Generally, pigmented spots with a diameter of less than 2mm (possibly a nevus) can be removed by laser, while those with a diameter of more than 2mm should be removed by surgery. Some pigmented moles will recur, and there is a possibility of malignant transformation after repeated stimulation, so laser mole removal should be done carefully. Surgical excision treatment is complete and leaves a thin line after surgery. In fact, pigmented moles are signs of people, and facial ones are usually benign. Closely observe if there are sudden changes before dealing with them. If the pigmented mole is located in the part that is easy to rub, especially the palm of the hand and the heart of the foot, surgical excision can be considered. Age spots Young people can also have “age spots”! If you think age spots are the patent of old people and young people will not grow them? Then you are wrong. Age spots are closely related to sunlight, and are directly related to the accumulated amount of UV rays received since birth. Early age spots are flat and can bulge after a long time. The transformation to age warts is seborrheic keratosis. Age spots are better removed by freezing or laser. Of course, the earlier the treatment, the better the result, the less damage, the faster the recovery, and the less number of treatments needed. Generally, one treatment is enough for early age spots, and it takes about 7 days to recover after the operation, while those with obvious protrusions that are about to develop into warts need more treatments and longer recovery period. After surgery, sun protection is needed to avoid pigmentation and further skin damage caused by UV rays. Generally, freckles are present since childhood and gradually increase with age, with many small pale brown spots on both cheeks and aggravated by sunlight. In the past, freezing treatment was also used, but the effect is not sure because the damage is greater. Laser can be used for each small spot, and the effect is immediate, so you can receive satisfactory results in one treatment. The treatment process may be mildly painful, and the pain can be reduced by applying topical anesthetic. After treatment, local scab will be formed, and the scab will be removed automatically after 7 to 10 days. When the scab is first removed, the area is red and needs strict sun protection to avoid leaving pigmentation. Sun exposure can cause freckles to reappear, even if the lack of sun protection causes freckles to reappear, there is no need to be nervous, laser treatment is still effective. Photorejuvenation can also be used to treat freckles, but the effect of photons is weaker and less targeted, and it usually takes 3 to 5 treatments to achieve the effect of elimination. When warts are found all over the face and neck, they can seriously affect the appearance. In the past, freezing was used to treat warts, but the process was painful and could leave pigmentation and affect the appearance. There are two safer methods: topical exfoliators (retinoic acid ointment) and photodynamic therapy (PDT), which usually requires three treatments, once every 10 days or so, and the effects of the treatment may not appear until after the entire course of treatment. If a person with a flat wart has a lot of oil on his skin, large pores, and acne, then you can control the oil, eliminate acne, improve large pores, and refine the skin at the same time as treating the flat wart, all at once. Five, zygomatic brownish nevus After 20 years old, some scattered spots suddenly appear in the cheeks or cheek, brownish blue, called zygomatic brownish nevus, laser treatment is effective. Because the pigment location is deeper, Q755nm laser or Q1064nm is needed for treatment, because these lasers have longer wavelengths and deeper penetration, which can just shatter the pigment located in deeper layers. It should be noted that the pigmentation may deepen after each laser, but don’t worry, the deepened pigmentation will fade away within 3 to 6 months. Therefore, do not rush the treatment until the pigment recovers. Generally, 2 treatments a year may take 5 to 10 times to get rid of the pigment, so do not be in a hurry. After the operation must be strict sun protection, otherwise it is easy to abandon the previous work. Tips: Scientific skin care is to combine their own skin characteristics to choose the right skin care products, general skin care products and cosmetics containing fragrances and preservatives. For allergic or sensitive skin, especially fair-skinned beauty lovers, due to the spring sunshine, outdoor activities increase, under the action of ultraviolet rays and sweat, allergies may occur, facial redness, rash, itchy, it is recommended to switch to medical skin care products containing less allergic, or fragrance-free, or even preservative-free.