Collagen: everyone knows about it. But while we were more accustomed to finding it in the composition of our anti-wrinkle creams and serums, it is now available in ingestible forms. In liquid form, powder to dilute, capsules, or chewable candies, collagen is everywhere! This is true to such an extent that  there are even shops dedicated entirely to this trend, such as the 48 Collagen Café in Paris.

Its promises? Slowing down the appearance of wrinkles and fine lines, hydrating and firming the skin, strengthening hair fibers and nails, improving joint comfort, or even reducing certain pains. The success is such that the global collagen market, valued at nearly $5.1 billion in 2023, is expected to reach $7.4 billion by 2030 according to a study conducted by MarketsandMarkets.

 However, not all specialists are convinced of the effectiveness of this supplement, pointing out the lack of scientific studies conducted on this subject. Moreover, it is possible to stimulate the natural production of collagen by adopting simple habits.

What is collagen?

Let’s start with a little reminder. Present  at over 30%, collagen is the most abundant protein in the human body. It is found notably in bones, cartilage, teeth, skin, tendons and ligaments, muscles, as well as blood vessels. Collagen is responsible for tissue cohesion. It plays an important role in the structural support of the body, prevents joint wear and tear, ensures the strength of blood vessels, skin firmness and elasticity, as well as wound healing. It is therefore essential.

Unfortunately, from the age of 25, the synthesis of collagen by our body decreases by about 1.5% per year. This results in a progressive decrease in skin elasticity and radiance, the appearance of fine lines, and some joint pain. Although this is a natural aging process, it can be accelerated by daily aggressions such as UV rays, pollution, poor lifestyle habits, smoking, and alcohol. Therefore, in an attempt to slow down the degradation of collagen and firm up tissues as much as possible, cosmetic brands are increasingly incorporating this protein into their products.

The dietary supplement trend

While collagen-enriched cosmetics have been on the market for several years, the consumption of dietary supplements is quite recent. This trend is based on the idea that we are what we eat. Thus, ingesting collagen, in addition to applying it to the skin, would offer better results. Many celebrities are also hooked on it. Jennifer Aniston, for example, consumes it daily, in the form of powder diluted in her favorite drinks.

The success is such that more and more brands are developing their own products (such as Atelier Nubio, D-Lab Nutricosmetics, Solgar, Vital Proteins, Aime, and more). Moreover, a study by the Mordor Intelligence agency estimates that sales of collagen-based dietary supplements are expected to reach $8.59 billion by 2029 (compared to $5.94 billion in 2024). Faced with this enthusiasm, one is tempted to think that customers are experiencing real benefits since they are increasingly consuming them.

@vitalproteins

Shoutout to #JenniferAniston for describing our vibe most days… but especially today.😴 *adds collagen to that second cup of coffee* #wellnessisvital #vitalproteins #vitalproteinsUS #collagen #collagenpeptides #daylightsavings #daylightsavingstime #coffeetiktok

♬ original sound – Vital Proteins

 Proven results?

Some specialists remain cautious about the actual benefits of these products. They notably denounce the lack of conclusive results from studies and the fact that many of them are funded by the cosmetic industry. Moreover, the evidence of collagen’s effectiveness in these various reports has not been deemed sufficient by the European Food Safety Authority (EFSA), which has refused to authorize the listing of its supposed many benefits. 

As a result, dietary supplements cannot claim to contribute to maintaining good joint health, help preserve skin firmness and elasticity, or support joint regeneration. Nevertheless, all experts agree that occasionally following a collagen regimen is not harmful to health. The only reported side effects are rare intestinal disorders. Some of them even think that this supplement has potential  if the right product is chosen. Indeed, not all brands are equal.

What should you pay attention to?

First, make sure that the dietary supplement contains at least 10g of collagen per daily dose. It should also be hydrolyzed to be effective. This indicates that it has been broken down into small molecules, which are more easily absorbed by the body. However, it is impossible to predict where the body will use these amino acids. Even if the supplement promises to act on signs of aging on the face, the body will use the supplement  where it needs it most.

Keep in mind that collagen is an animal protein. It is found in bone broth, meat, fish, and egg whites. So, if the supplement claims to have a 100% plant-based collagen origin, know that this is not possible.

Finally, like any dietary supplement, collagen supplements can only be effective if taken as part of a healthy lifestyle. Excessive consumption of sugar, alcohol, and tobacco is responsible for premature aging of the skin and the body. Moreover, the more toxins there are in the body, the less the intestinal mucosa will be able to absorb good things, including collagen. Therefore, aim for a balanced diet (favoring proteins like meat, chicken, and eggs, naturally rich in collagen), engage in regular physical activity, and protect yourself from UV rays daily. 

According to specialists, these good habits are enough to stimulate the body’s natural production of collagen. But there’s nothing stopping you from occasionally taking dietary supplements if you wish. However, be careful not to consume them if you are pregnant or breastfeeding, or if you have kidney or liver problems. So, miracle product or just marketing hype? We’ll let you make up your own mind.