ProtoClinical k-beauty MEDIHEAL Collagen Firming Volume Serum with Retinol 40ml single upright serum bottle centered on a pale pink and white background
ProtoClinical k-beauty MEDIHEAL Collagen Firming Volume Serum with Retinol 40ml single upright serum bottle centered on a pale pink and white background
ProtoClinical k-beauty MEDIHEAL Collagen Firming Volume Serum with Retinol 40ml single upright mauve serum bottle centered on a pale pink and white background
ProtoClinical k-beauty MEDIHEAL Collagen Firming Volume Serum with Retinol 40ml single upright mauve serum bottle centered on a pale pink and white background
MEDIHEAL

MEDIHEAL Collagen Firming Volume Serum with Retinol 40ml

$17.03
Supports firmer-looking skin Softens fine lines and roughness Helps improve bounce look Adds smooth evening moisture Leaves skin comfortable and polished
A silky firming serum that helps skin look fuller, smoother, and more lifted when bounce starts to dip. Collagen, retinol, and squalane work together to support a more elastic-looking surface while softening the look of fine lines and roughness.The texture stays comfortable and polished on skin, making it...
A silky evening serum that helps skin look fuller, smoother, and more elastic.
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Retinol Firming Care Evening-Friendly Serum Smooth Finish Elasticity Support
Retinol/Vitamin A Hyaluronic Acid Collagen Squalane Resveratrol Silk
MEDIHEAL Collagen Firming Volume Serum with Retinol 40ml
MEDIHEAL Collagen Firming Volume Serum with Retinol 40ml Default Title
$17.03
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
What's inside ·

Retinol/Vitamin A, the repair molecule

Retinol converts to retinoic acid inside the skin, where it binds to nuclear receptors that regulate gene expression for cell turnover and collagen production. In this serum, Retinol targets loss of firmness, delivering supports visible firmness and a lifted, contoured appearance with consistent use.
Retinol
accelerates cell turnover and stimulates collagen synthesis for smoother, firmer skin
Collagen
replenishes surface-level structural support for bounce and plumpness
Squalane
mimics the skin's own oils for lightweight, non-clogging hydration
The texture

Lightweight, absorbing serum

A silky firming serum that helps skin look fuller, smoother, and more lifted when bounce starts to dip. Collagen, retinol, and squalane work together to support a more elastic-looking surface while softening the look of fine lines and roughness.

The texture stays comfortable and polished on skin, making it a strong evening step for routines focused on firmness, glow, and a smoother-looking finish.

Dry Skin Normal Skin Mature Aging Dull Pigmented Brightening Radiance Wrinkles Fine Lines Loss of Firmness Elasticity Roughness Texture
Hover the swatch — it ripples like water

How to use

1

In the evening, apply an even layer to the face after toner.

2

Pat gently until absorbed.

3

Follow with moisturizer.

4

Use sunscreen during the day.

Full transparency

Ingredients

Retinol, collagen, squalane, and hyaluronic acid support smoother texture, visible firmness, and comfortable moisture.

This formula combines a classic smoothing active with supportive moisture ingredients to address visible loss of firmness. Retinol is widely used in cosmetic skincare because it helps improve the look of fine lines, rough texture, and unevenness through renewal-focused care. In this serum, that retinol direction is balanced with collagen, squalane, and hyaluronic acid so the skin remains more comfortable as it works on visible texture. Squalane helps reduce moisture loss and adds slip without a greasy feel, while hyaluronic acid supports water retention for a plumper-looking surface. Collagen reinforces the formula's volume and elasticity story by helping the skin feel smoother and more cushioned. Because the texture is silky and the product is positioned for firming care, it makes sense as an evening step where resurfacing and replenishing support can work together. The science here is about smoother texture, better moisture balance, and a fuller-looking complexion with consistent nighttime use.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesAll Skin Types
Country of originSouth Korea
Pairs beautifully with

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$17.03
Before you add to cart

Questions & answers

After cleansing and toning, before moisturizer. Serums deliver actives most effectively on freshly prepped skin.
Yes. Apply from thinnest to thickest consistency and allow each layer to absorb before the next.
Most users notice initial improvement within 2 to 4 weeks. For full benefits like supports visible firmness and a lifted, contoured appearance, allow 6 to 8 weeks of consistent use.
Your skin begins adjusting. You may notice improved hydration and comfort before more visible changes like texture refinement become apparent.
Yes, this formula is developed to be compatible with all skin types dealing with loss of firmness. If you have very reactive skin, patch test on the inner arm before full application.
The formula is designed to be well-tolerated. For pregnancy-specific concerns, consult your healthcare provider. For sensitive skin, patch test before full application.
Retinol accelerates cell turnover and stimulates collagen synthesis for smoother, firmer skin. Consistent daily use is key to seeing the full benefits.
Check the INCI list for the most accurate information on fragrance components. The formula is developed for minimal irritation potential.
Store in a cool, dry place away from direct sunlight. Use within 12 months of opening for optimal freshness and efficacy.
Serums have a higher concentration of targeted actives than essences and a lighter consistency than most ampoules. They deliver the most potent treatment in your routine.
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MEDIHEAL
About the brand

OriginSeoul, KR
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