The essence of collagen is protein, which cannot be directly absorbed by human body. It needs to be digested by the stomach and broken down into amino acids before it can be absorbed, and then it can enter the cells to recombine into different protein.

In other words, you eat collagen, but it is not necessarily collagen, let alone collagen disappeared in your skin.

Moreover, if there is not enough vitamin C in the body, it is no use eating more collagen products, and it is impossible to produce collagen needed by the human body.

What's more, collagen is not an excellent source of protein, and its absorption and utilization are poor. Its nutritional value is not as high as protein contained in eggs and soybeans.

Not only will it not make the skin better, but eating too much may also increase the burden on the kidneys.

Yuqi Zhang, who robbed the beauty blogger of her job, once said that she had a lipoma because of taking collagen for a long time.

The so-called collagen can beautify the skin, which is all hyped up by merchants for profiteering.