Collagen, known as a key component for skin health, is referred to as an 'edible moisturizer.' However, no matter how much you consume, if the absorption rate in the body is low, the effect is minimal. Collagen is a type of protein, and its efficiency varies depending on molecular size, accompanying nutrients, and timing of intake. Rather than just consuming 'edible collagen,' it is important to have habits that aid absorption and synthesis. Let's explore how to consume collagen that reaches deep into the skin.
Must be consumed with Vitamin C to promote synthesis
Collagen must combine with vitamin C in the body to stabilize its structure. If vitamin C is lacking, the consumed collagen cannot be re-synthesized into skin tissue. It is effective to eat fruits and vegetables rich in vitamin C, such as lemons, oranges, bell peppers, and kiwis, or to choose a collagen and vitamin C complex supplement. In fact, clinical studies have shown that simultaneous intake of collagen and vitamin C improves skin elasticity and hydration.
Collagen supplements are better than pig's feet and skin
Pig's feet, pork skin, and chicken feet are also rich in collagen, but most of it is in the form of 'insoluble collagen.' The collagen from animal products may have a low utilization rate in the body, and it is recommended to consume it in low molecular form or with complex nutrients for efficiency. In contrast, 'collagen peptides' that have undergone hydrolysis have a high utilization rate in the body, and studies have shown that consistent intake for more than four weeks can increase skin moisture levels by over 20%. In other words, consuming collagen in the form of functional ingredients rather than food may lead to higher absorption efficiency.
Low molecular collagen: Molecular size affects absorption
The larger the molecular weight of collagen, the harder it is to absorb in the body. Research has shown that 'low molecular collagen peptides' under 1000Da have a relatively higher absorption rate than regular collagen (300,000Da). The smaller the molecule, the more quickly it is absorbed in the form of amino acids in the small intestine, making it more likely to reach the dermis layer of the skin. Recently, there are many low molecular products in jelly, powder, and drink forms, but it is essential to check that they are labeled under 1000Da.
Effective when taken on an empty stomach or before bed
The absorption rate of collagen varies depending on the time of day. Right after a meal, the secretion of stomach acid increases, leading to faster protein breakdown, so the highest absorption rate occurs on an empty stomach or one hour before sleeping. This is because skin cell regeneration and collagen synthesis actively occur during sleep. Consistently consuming collagen drinks or jellies as part of an evening routine can lead to long-term improvements in skin texture.
Must also maintain protein, hydration, and sleep routines
Collagen does not work alone. If overall protein intake is insufficient or sleep is irregular, the efficiency of synthesis in the body decreases. The appropriate daily protein intake is more than 1g per kg of body weight, and more than 1.5L of hydration is necessary each day. The growth hormone secreted during deep sleep helps skin recovery, making sufficient sleep a 'more powerful inner beauty routine than moisturizers.'
