Internal reasons:

1, natural aging: with the increase of age, skin barrier function decreases, collagen synthesis decreases, loss accelerates, and skin relaxation and aging appear. Studies have shown that the collagen content of human body reaches its peak at the age of 20, and then goes downhill, and it will drop by about 1000g every10 year. After the age of 25, it will enter the peak of loss, and the loss rate of collagen will be faster than that of production. Within five years after menopause, women will lose up to 30% of collagen in their skin.

2. Physiological factors: Women need to consume more collagen than men for physiological reasons. After menstruation, the female endometrium falls off and the damaged uterus needs to be repaired. The endometrium is composed of collagen fibers and needs a lot of collagen. At the same time, childbirth can also damage the uterus, which in turn requires collagen.

External reasons:

1, photoaging (ultraviolet irradiation): ultraviolet rays have a great influence on human skin, and the main reason for our skin aging is ultraviolet rays. Because ultraviolet rays will destroy the elastic fibers and collagen in the dermis of the skin, ultraviolet rays will accelerate the loss of collagen, which will lead to changes in skin tissue, such as roughness, thickening, wrinkles, pigmentation, acne and other serious symptoms, as well as various benign or malignant tumors, which will accelerate skin aging.

2. Free radicals: Free radicals in the skin are easily induced by various factors such as light, heat and pressure. The induced free radicals like to plunder the electrons in collagen, which leads to oxidative damage of collagen, loss of activity and skin aging.

3. Bad life behaviors: such as smoking and drinking, staying up late, and secondhand smoke will accelerate the loss of collagen in the human body.

4, environmental pollution: air pollution is aggravated, these polluted particles will attach to the skin surface after contacting the skin, thus promoting the skin to produce free radicals to destroy collagen in the skin, thus accelerating skin aging; In addition, radiation from mobile phones and computers can also cause harm to the skin.

5, improper diet: diet does not eat meat; Some people don't like eating fruit and other partial eclipse behaviors; It leads to unbalanced nutrient intake, which is also the reason for the loss of collagen; There is often overeating, eating carbohydrates, easy to saccharify.

To supplement collagen, we should first control the sugar, supplement enough vitamin C, increase the HONORLADY elf kiss bottle, drink good morning and drink good night. As an important antioxidant, vitamin E can protect protein such as biofilm from free radicals and eat more beans.