A woman's skin goes through three stages in her life: water and oil balance at the age of 20, hydration and moisturizing at the age of 30, and anti-aging and anti-wrinkle at the age of 40. If you can understand the skin characteristics of these three age groups and carry out very targeted nursing work at each stage, you will really make everyone stunned than your peers in a few decades. The first level is 20 years old-water and oil balance. 20 years old, with good skin and rosy complexion, he is definitely "God's darling". All you have to do is the basic nursing steps-cleaning, moisturizing and sun protection, and you can spend every day safely. This is the age when the skin is "in its prime". The skin is elastic, even, soft and full of moisture. This is because the collagen and metabolic rate in the body are at the peak, and the physiological cycle of the skin is normal for 28 days, which makes the skin feel crystal clear and not prone to fine lines and freckles. Even so, we can't ignore some potential problems and preventive work, and we should extend the advantages of young skin as much as possible. Twenty years old is the most exuberant age of oil secretion, which may occasionally cause acne, blackheads or acne. Removing oil and keeping water is the key point of nursing. After the age of 25, the metabolism of the body and skin began to slow down, and various signs of skin aging began to appear. Maintenance code: 1. Keep your skin clean. Wash your face carefully twice every morning and evening. 2. If it is oily skin, you can use skin care products for oily and acne skin. 3. Moisturizing products should choose lotion or emulsion with high moisturizing degree and low oil content. 4. Don't often use deep cleaning products because of "fear of oil shine". Excessive cleansing can easily damage the pH of the skin. 5. Wear sunscreen every day when you go out, preferably oil-free. The second level is 30 years old-hydrating and moisturizing 30-year-old skin will age, and its luster, moisture and elasticity will decline. If your skin is damaged by ultraviolet rays at the age of 20, 90% of people will show it at this age: dry skin, spots gradually appear, freckles appear and deepen. From this time on, signs of skin aging began to appear frequently. You will find traces of wrinkles in some "fragile" places: the side of the neck, lips, corners of the eyes and forehead. The skin is no longer as smooth and delicate as before, although it is not rough, but you can notice the uneven skin color on your face. When sleeping, the pillow leaves an "indentation" on the face, or some tiny wounds and acne marks, but it takes a long time to recover; Not only that, the pores on your face begin to become obviously thick, and the stratum corneum is easy to accumulate on the epidermis. Moreover, skin experts also found that 30-year-old skin is also easy to grow into human pox. Maintenance code 1. In addition to basic cleaning and maintenance, we should also use skin care products with antioxidant effect and adhere to sun protection. 2. Make facial granule scrub once a week, or use AHA fruit acid skin care products to remove aged keratin and dead skin on the face and restore skin luster. After 3.30 years old, the amount of collagen in the body decreases, the skin elasticity is not as good as before, and the surface layer is slack and drooping. At this time, we should insist on using some "tight skin" skin care products. Every time we apply it, we should stick it on the upper part of the neck and push it from bottom to top, which can effectively delay the sagging and relaxation of the skin. 4. You can try to apply foundation, which can not only isolate ultraviolet rays and environmental pollution, but also adjust uneven skin color. Other fatal injuries of aging skin: smoking-smoking not only consumes a lot of vitamin C in the body, but also releases free radicals and harmful substances. In addition, nicotine can narrow blood vessels, make blood vessel transport function worse, and naturally affect skin condition. Alcoholic beverages-Alcohol will leave toxic substances in the body and accelerate skin aging, which is definitely the enemy of the skin. Lose weight quickly-this method of losing weight is prone to malnutrition, the skin will relax because of sudden thinning, and hormonal imbalance will make the skin worse. Drink less water-this is definitely harmful to health. If you don't drink enough water, your skin will become dry.