Ultraviolet light is not the direct cause of discoloration in many cases. Although UV irradiation can cause deepening of discoloration within just a few days, this deepening of color is generalized and does not only deepen the areas with discoloration. In addition, the aggravation of discoloration caused by UV rays will return the entire facial complexion, including the discoloration, to its pre-irradiation state when the sun exposure situation improves. It is widely believed that the onset of age spots is related to UV exposure, but this relationship is based on the accumulation of light aging effects from years or even decades of exposure. Melasma, also known as coral spot, is a common pigmentation disorder. Melasma is mostly associated with endocrine, especially sex hormone, disorders, and is most common in women during the period of reproductive activity. There are many reasons for the formation of chloasma. When the human body’s liver or kidney is not functioning well and when it receives too much ultraviolet light, chloasma is very easy to develop on the face. Melasma is also related to hereditary chloasma. Pelvic inflammatory disease can cause melasma. In addition, mental factors, chronic consumptive diseases, women’s pregnancy and some poor quality cosmetic stimulation are all prone to this disease. For women’s skin, sauna is also a not insignificant damage. A large amount of hot steam will make the skin dehydrated rapidly in a short time, and it is easy to become dry and rough, making chloasma appear on women’s skin. In recent years, more research has been done on the etiology of melasma and its mechanism in terms of endocrine disruption, skin microecological disorders and free radical damage. In order to prevent the aggravation of the symptoms of pigmentation, as well as to prevent the long-term effects of photoaging, defense against ultraviolet rays is important. The use of sunscreen is a common means of defense, and sunscreen has two key indicators, SPF and PA. SPF is called the sun protection index, which refers to the ability of sunscreen to fight against ultraviolet B. For example, if the skin is red after 10 minutes of original irradiation, and it takes 200 minutes of irradiation for the skin to be red after applying sunscreen, which is a 20-fold prolongation, the sun protection index of this sunscreen will be 20. PA is the ability to fight against the sun. Sunscreen against ultraviolet A ability, there are +, + + +, + + + + three levels, the higher the grade, the stronger the anti-tanning ability. It should be noted that the purchase of sunscreen is not the higher the index the better, because the sunscreen index is high, the sunscreen agent contained (such as titanium dioxide and zinc oxide) the more, will irritate the skin and cause pore clogging. So should be based on the environment to choose the right sunscreen, working indoors as long as the use of the index of 20 or less, in the outdoor running around the people can choose the index of 20-30, if the beach sunbathing, it is necessary to use the index of 30 or more of the sunscreen. Aging is a natural process, anti-aging, refers to a number of inhibitory, slowing down the aging process of the organism, can promote overall health, so that the organism in the genetic factors determined by the longevity of the body to maintain a better intelligence and physical strength. And aging is a necessary stage of life, even if you have how reluctant. Skin will appear various problems such as wrinkles, sagging, pigmentation, dullness, etc. as the years go by. The human body is aging in three stages: 1, the first stage: mild aging 25-35 years of age, lack of energy, physical exhaustion, wilting, fatigue, memory loss, easy to catch a cold, poor sleep, loss of appetite, dull skin, pigmentation, immune system decline. Slight wrinkles appear . 2, the second stage: moderate aging 35-45 years old mood swings, irritability, anxiety, insomnia, paranoia, memory loss, menstrual disorders, loss of libido, breast atrophy, abdominal distension, severe pigmentation, skin dryness, elasticity loss, large pores, deepening of wrinkles, hot flashes and sweating. Moderate wrinkles appear. 3, the third stage: severe aging 45-55 years old The human body into a period of rapid aging, muscle aging, a variety of diseases; women around 45 years old after menopause, due to ovarian atrophy, estrogen secretion reduction, skin loss of water wrinkles, breast sagging, body fat, more likely to cause psychological anxiety, depression and other psychological disorders. Women enter the rapid aging period! You will step into the old age state! Nutrition anti-aging: 1, rubbing hands hands first to rub the back of the hand 50 times, and then rub the palm of the hand 50 times. Frequent hand rubbing can promote the brain and the whole body’s excitement hub, increase the flexibility of the hands, flexibility and resistance to cold, but also can slow down the aging of the hands. 2, rub forehead, take turns rubbing the forehead up and down 50, often rub forehead can wake up the brain, but also can delay the production of wrinkles. 3, rubbing the nose with the index fingers of both hands to rub the sides of the bridge of the nose. Often rubbing the nose can make the nasal passages smooth, and can play a role in preventing colds and rhinitis. 4, rubbing the ear with the palm of the hand back and forth rubbing the ear 50 times, through the stimulation of acupuncture points on the ear to promote the health of the whole body, and can enhance hearing. 5, rub chest first left hand after the right hand in the middle of the two ribs, “thymus” points take turns rubbing each 50, often rub chest can play a role in pacifying the heart. 6, rubbing the abdomen after the right hand first left hand, first clockwise and then counterclockwise, take turns rubbing the abdomen 50 times, can promote digestion, to prevent food accumulation and constipation. 7, rub waist left and right palms in the waist rub 50, can tonic kidney and waist and reinforce the energy, but also can prevent and control lumbago. 8, rub the foot first with the left hand to rub the bottom of the right foot 50 times, and then rub the bottom of the left foot with the right hand 50 times. Foot is a person’s “second heart”, can promote blood circulation, stimulate and enhance the function of the endocrine system, strengthen the body’s immune and disease resistance, and can increase the cold resistance of the foot.