[Doctor's Column] Does Oral Collagen Help with Skin Elasticity? : How to Distinguish the Evidence Behind Supplements and Procedures

I'm taking collagen supplements, but I'm not sure if it's working for my skin.

If you take collagen supplements, you may be wondering if they help with skin elasticity. When reviewing research results, you should check which products and subjects were examined, as well as the quality of the study and its sponsorship.

The collagen you consume is not directly replenished in the skin. Skin collagen is synthesized by fibroblasts in the dermis. Supplement studies and procedure studies are based on different evidence. ...and we do not conclude that either is unconditionally better or absolutely necessary.

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Q1. Why does collagen decrease with age?

Skin collagen is produced by fibroblasts in the dermis. The balance and structure of collagen synthesis and breakdown can change depending on factors such as aging and UV exposure. Since the degree of progression varies from person to person, a blanket explanation based on a specific age is not provided.

As collagen decreases, the skin becomes thinner, loses elasticity, and wrinkles and fine lines deepen.
This process is accelerated by UV exposure (photoaging).

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Q2. Is ingestible collagen effective for the skin?

When you consume collagen supplements (hydrolyzed collagen), they are broken down into amino acids and dipeptides (such as Pro-Hyp) during the digestive process.
There is research suggesting that some of these can reach the skin through the bloodstream.

In a double-blind placebo-controlled study involving 69 subjects, the group that consumed collagen peptides for 8 weeks showed a statistically significant improvement in skin elasticity compared to the placebo. However, no significant differences were observed in water content and transepidermal water loss.

Meanwhile, a meta-analysis combining 23 randomized controlled trials (1,474 participants) yielded different results.
Overall, improvements were observed in moisture, elasticity, and wrinkles, but When analyzing only studies not sponsored by pharmaceutical companies, no significant effects were confirmed in terms of moisture, elasticity, or wrinkles.
The same result was obtained even when analyzing only high-quality research papers.

In other words, while it cannot be concluded that ingestible collagen is of no help to the skin at all, Based on the current evidence alone, it is difficult to say that the effect is certain.

Image: Produced by Maypure Doctor Column

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Q3. What is the basis for your assessment of collagen-related procedures?

It is necessary to distinguish between the response in cell experiments and the clinical effects observed in humans. In experiments where cultured human dermal fibroblasts were treated with PLLA, increased expression of type I collagen genes and protein synthesis were reported [3]. This was a cell study using other PLLA products and is not a result that directly proves the efficacy, injection layer, or duration of Olidia.

At our Yeonsinnae branch, we assess your skin condition and concerns before determining the suitability of the treatments listed below. Please note that these are not the same procedure, and we do not claim that any of them are superior in effectiveness by directly comparing them to supplements.

▶ Collagen-stimulating injection
Olidia is a volume and elasticity treatment using PLLA. An individual plan is provided based on a series of treatments spaced at least 4 weeks apart, and the duration of results and effectiveness are not guaranteed as fixed figures.

▶ Energy Equipment and Microneedle High Frequency
CoolSonic (HIFU), Denserty (high frequency), and QuadSay (microneedle high frequency) differ in their mode of action and the depth and area of ​​application. They are not described as all acting on the same skin layer.

▶ Fractional Laser
The Pico Fraxel and CO₂ Fraxel at our Yeonsinnae branch also differ in the type of laser and tissue response. We select the treatment after examining your actual concerns, such as pores and scars, as well as your skin condition.

▶ Skin Booster
Consultations regarding products such as Rivicol, Riviella, and Rivishine differentiate based on their specific characteristics and intended applications. We do not treat hydration and skin texture improvement as having the same effect as the generation of new collagen.

When planning to use energy equipment and heat-sensitive injectables together, we proceed with the energy equipment first, in accordance with the policy of our Yeonsinnae branch.

※ Swelling, bruising, and nodules may occur after the injection procedure, and PLLA carries a risk of delayed nodules and granulomas. The major risks and precautions for equipment-based procedures must be explained for each specific procedure. General information alone cannot replace a consultation, and suitability and effectiveness vary from person to person.

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Q4. How to protect collagen in daily life?

・Consistently practice UV protection.
・Avoid smoking.
・Maintain sufficient sleep and a balanced diet.
・Consume a variety of foods containing Vitamin C and protein.

For example, before adding supplements, you can start by checking your sun protection and dietary and sleep habits. Lifestyle management alone cannot reverse all deep wrinkles or volume loss.

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Skin concerns vary from person to person. After a consultation, we will guide you to the most suitable treatment based on your records.

Chief Director Sim Dong-gyu of Maypure Clinic Yeonsinnae Branch
Graduated from Korea University
Graduated from Korea University School of Medicine

Maypure Clinic Yeonsinnae Branch
3rd Floor, Metro Tower, Directly Connected to Yeonsinnae Station (856 Tongil-ro, Eunpyeong-gu, Seoul)
02-389-9980

▼Get a free real-time consultation with Maypure right now▼

References
1. Proksch E et al. Skin Pharmacol Physiol. 2014;27(1):47-55. PMID: 23949208
2. Myung SK, Park Y. Am J Med. 2025;138(9):1264-1277. PMID: 40324552
3. Kim SA et al. Ann Dermatol. 2019;31(1):97-100. PMC7992693

※ This post is intended to provide general information about the procedure, and the effects and recovery period may vary depending on individual skin conditions.
※ Please be sure to consult thoroughly with medical staff before the procedure.

#YeonsinnaeDermatology #Collagen #SkinCollagen #YeonsinnaeProcedure #EunpyeongguDermatology