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Maggok Dermatology: When Do Retigen Results Appear? Summary of How Long They Last

Hongdae Dermatology Skin Clinic 弘大美丽石医院 · ✦뷰티스톤의원 합정역✦ · March 13, 2026

Hello. This is We Young-jin from Maggok Dermatology. ​ ​ When talking about skin aging, the ingredient mentioned most often is collagen. ​ ​ Collagen is a protein in the dermis tha...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: Hongdae Dermatology Skin Clinic 弘大美丽石医院

Original post date: March 13, 2026

Translated at: April 20, 2026 at 2:21 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

Maggok Dermatology: When Do Retigen Results Appear? Summary of How Long They Last image 1

Hello.

This is We Young-jin from Maggok Dermatology.

When talking about skin aging,

the ingredient mentioned most often is

collagen.

Collagen is a protein in the dermis

that helps support

the skin’s structure.

Simply put, it acts like a pillar

that helps maintain skin elasticity

and hold the skin’s shape.

When there is enough collagen,

the skin remains firm

and resilient.

However, collagen is not an ingredient

that stays constant for life.

In general, collagen

begins to decrease by about 1% per year

starting in the mid-20s.

And after the 40s,

the rate of decline becomes faster,

and a reduction in skin elasticity

begins to appear in earnest.

At this stage,

a simple moisturizing routine or brightening care alone

may not be enough

to sufficiently improve skin changes.

That is because it is not just the skin surface,

but the density of the skin structure itself

that is decreasing.

So recently, rather than methods that manage the outer skin,

there has been growing interest in care methods

that directly supplement the skin structure.

For this reason,

in consultations at Maggok Dermatology,

inquiries about collagen injections are steadily increasing.

What is Retigen?

Maggok Dermatology: When Do Retigen Results Appear? Summary of How Long They Last image 2

When people hear “collagen injection,”

most think of a method that

induces collagen production.

For example, it works by stimulating the skin

so that fibroblasts become activated

and collagen production increases.

However, Retigen uses

a slightly different approach.

Retigen is not a method that waits for collagen production;

it is a method that directly replenishes collagen

in the skin.

In other words, rather than inducing the skin to make collagen,

it can be understood as directly supplying

the collagen needed for the skin structure.

The ingredient used in Retigen is

highly purified animal-derived collagen.

This collagen is injected deep into the dermis

to reinforce the density and elasticity structure

of the skin tissue from within.

In other words, it is not a procedure that simply adds volume,

but one that focuses on making the skin structure itself firmer.

For this reason,

at Maggok Dermatology as well,

consultations for collagen injections to improve skin density

are steadily increasing.

When Do Retigen Results Appear?

Maggok Dermatology: When Do Retigen Results Appear? Summary of How Long They Last image 3

Retigen is not a procedure

that creates an immediate volume change like a typical filler.

Instead, it is a method that gradually creates changes

within the skin tissue over time.

Immediately after the procedure,

there may be slight swelling

or redness due to the injection.

However, these reactions

usually stabilize within a short period of time.

As time passes after that,

the skin condition gradually begins to change.

In general,

after about 1–2 weeks,

many people first notice

that their skin texture feels more refined.

And after about 3–4 weeks,

some people begin to notice changes

in skin feel and improved elasticity.

Maggok Dermatology: When Do Retigen Results Appear? Summary of How Long They Last image 4 The injected collagen

does not disappear immediately inside the skin;

it remains and acts for up to about 6 months.

During that time,

the skin gradually becomes more refined

and recovers density without irritation.

So Retigen is considered a procedure suitable for those

who want natural and stable skin improvement

rather than a fast change.

In particular, even those with sensitive skin

or those who feel burdened by procedures that involve strong stimulation

can consider it relatively comfortably.

For this reason,

at Maggok Dermatology as well,

people with sensitive skin types often seek consultations

for collagen injections.

Are There Any Side Effects of Retigen?

Because collagen injections involve injecting ingredients into the skin,

many people wonder whether there are any side effects.

The collagen used in Retigen is

known as a highly biocompatible material

that has undergone purification.

Also, because it works by being gradually absorbed in the skin,

cases of sudden changes are relatively rare.

That said, as with any injection procedure,

temporary reactions may appear immediately after treatment.

For example,

there may be mild swelling

or small bruises.

Or you may feel a temporary change in sensation.

However, these reactions

are often postoperative responses that naturally subside

within a few days in most cases.

In particular, because Retigen is not a procedure that uses strong stimulation,

it is considered a relatively accessible collagen injection

even for those who found previous procedures burdensome.

Of course, for any procedure,

an accurate diagnosis and treatment plan

from an experienced medical professional is important.

That is because only then can stable results be expected

in a way that suits the skin condition.

Retigen Key Summary

To briefly summarize Retigen,

it has the following features.

🌿 Direct injection of highly purified collagen into the skin

🌿 Naturally improves skin texture, density, and elasticity

🌿 Relatively little stimulation and a fairly quick recovery

🌿 May work for about 6 months

🌿 With regular care, it can help improve long-term skin condition

If you understand these key points

and know the basic information before visiting Maggok Dermatology,

it may also be helpful during the consultation process.

Retigen is not a method that gives the skin strong stimulation;

it is a collagen injection that gradually supplements the skin structure.

So rather than a noticeable, sudden change,

it is a procedure aimed at naturally improving

skin texture and elasticity over time.

If your skin has recently started to feel thinner

and less elastic,

it may help to consider care methods

that directly supplement the skin structure.

This has been We Young-jin from Maggok Dermatology.

Thank you for reading.

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