Collagen products are a type of product hyped based on pseudo-scientific commercial concepts and have little effect on beauty. So it can neither replenish collagen nor replenish water. The only function is to spend money to buy psychological comfort, which can act as a placebo.

People will decompose and digest various foods after taking them, so even if they eat collagen, the collagen synthesized after decomposition is quite different from the collagen they want to form. Collagen has many dipeptides and tripeptides that are directly absorbed into the blood, and there is clear scientific evidence for this. In 2005, Japanese scholars published a paper studying the absorption of hydrolyzed collagen. They found that hydroxyproline was barely detectable in human plasma before consuming hydrolyzed collagen. One to two hours after eating, the hydroxyproline content in the blood increases significantly. Among them, about 25% of hydroxyproline

acid is present in dipeptides and tripeptides. There are peptidases in human plasma that can break down peptides entering the blood into amino acids. Other peptides usually only take a few minutes to be broken down by half, but the "proline-hydroxyproline" dipeptide from collagen still has 75% of its content after 24 hours. Leave. This dipeptide accounts for the vast majority of collagen dipeptides in the blood.

Will so many stably existing dipeptides help the skin synthesize collagen? Businessmen treat this "question" as "fact" to deceive. In fact,

Human proteins must be synthesized in cells, and these dipeptides and tripeptides cannot enter cells as raw materials for protein synthesis. In other words, they are indeed absorbed into the blood, but they cannot be used and are eventually excreted from the body.

In some cell experiments, scientists found that these dipeptides can serve as a "signal" to promote the aggregation and growth of fibroblasts. Based on this, some people speculate that they may promote wound healing. Because joint cartilage

is also composed of collagen, some scientists speculate whether supplementing collagen can help maintain joint health and relieve joint discomfort. Collagen promoters directly borrowed this concept, claiming that although these absorbed peptides cannot be directly involved, they can serve as signals to promote the synthesis of skin collagen. There is little scientific evidence to support this idea. In March 2011, Germany's Gelita, the world's giant in the collagen industry, compiled research on this effect in scientific literature and applied to the European Food Safety Authority (EFSA) for approval of "hydrolyzed collagen

Keep your joints healthy” health claim. After two supplementary submissions, EFSA's scientific committee concluded in June that the studies could not support this conclusion.

In short, whether it is a summary of Jialida's literature or other "latest formulas", oral administration of collagen for beauty and skin care is just an imagination. After so many years of research in this field, no convincing evidence has been found. As a consumer, the most sensible judgment is that this function does not exist!