Collagen is a kind of high molecular protein, which exists in the skin, bones, teeth, tendons and other parts of the human body. Its main physiological function is to act as adhesive substances of connective tissues. From the perspective of beauty, collagen is the main component that maintains the elasticity of the skin and muscles. When people are over 25 years old, the collagen in the skin begins to be lost. It's like the springs in the spring bed getting old and losing elasticity, causing the bed to sink. The human skin also starts to show signs of aging such as wrinkles and spots due to the loss of elasticity. Therefore, it is necessary to supplement collagen for the skin artificially. With the increase of age, the function of the organism antioxidant system declines, and the ability to clear free radicals decreases, leading to the accumulation of a large number of free radicals, which activates matrix metalloproteinase (MMP). The enhanced activity of MMP can decompose a large amount of dermal collagen. Therefore, inhibiting the activity of MMP, improving the antioxidant capacity of the body, and at the same time replenishing the lost collagen are the keys to beauty. Nowadays, there are various ways to supplement collagen. One way is to add a certain amount of collagen or amino acids into cosmetics. Direct application has protective and anti-aging effects on the skin, but the effect lasts too short, and even long-term use cannot be converted into one's own collagen. Another way is injection by a specialist doctor. Although this method can improve facial wrinkles caused by aging, some people may be allergic to directly injected collagen, and discomfort symptoms may occur after injection, and the effect is also temporary. The third way is to eat collagen. Collagen will be hydrolyzed and absorbed in the gastrointestinal tract, serving as raw materials for the human body to synthesize collagen. The biggest advantage of this method is self-absorption and self-synthesis, which is less likely to cause rejection reactions. In this regard, it is the safest and healthiest way for people to appropriately take collagen from food to nourish the skin, such as eating some meat skin, pig trotters, cow trotters, ox tendon, chicken wings, etc., which are all good choices. Here, I would like to remind everyone that while taking collagen through food, you can also eat more oranges, carrots, eggs, beans and other foods. These foods have antioxidant functions, which can reduce the destruction of collagen by free radicals in the body. Source: Qilemei Collagen Official Website