ProtoClinical k-beauty Isntree Hyper Vitamin C23 Serum 20ml shown as a single slim gray bottle centered upright with soft side accents on a white background
ProtoClinical k-beauty Isntree Hyper Vitamin C23 Serum 20ml shown as a single slim gray bottle centered upright with soft side accents on a white background
Isntree

Isntree Hyper Vitamin C23 Serum 20ml

$16.17
Brightens dull-looking skin Helps even skin tone Targets visible discoloration Provides antioxidant support Promotes a clearer glow
23% Pure Vitamin C serum helps brighten the complexion and evens skin tone.
A high-strength vitamin C serum made for skin that looks dull, uneven, or post-blemish marked.
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23% Pure Vitamin C Tone-Evening Serum Antioxidant Brightening
ascorbic acid
Isntree Hyper Vitamin C23 Serum 20ml
Isntree Hyper Vitamin C23 Serum 20ml Default Title
$16.17
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
Pairs beautifully with

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$16.17

ascorbic acid

Vitamin C (L-ascorbic acid) donates electrons to neutralize free radicals before they can damage collagen fibers and DNA. In this serum, Vitamin C targets uneven texture, delivering visibly brightens skin tone and fades uneven patches with consistent use.

Vitamin C
neutralizes free radicals and inhibits melanin production for brighter, more protected skin
The texture

Lightweight, absorbing serum

23% Pure Vitamin C serum helps brighten the complexion and evens skin tone.

All Skin Types Uneven Texture Dullness and Fatigue
Hover the swatch: it ripples like water

How to use

1

Apply after toner to dry skin.

2

Use a small amount over the face or on discoloration-prone areas.

3

Pat in gently and follow with moisturizer.

4

Use sunscreen every morning.

Full transparency

Ingredients

23% pure vitamin C helps brighten the complexion and support more even-looking skin tone.

Vitamin C (L-ascorbic acid) donates electrons to neutralize free radicals before they can damage collagen fibers and DNA. It also inhibits tyrosinase, the enzyme responsible for melanin overproduction, which is why it simultaneously brightens existing discoloration and prevents new spots from forming. The antioxidant effect compounds with sunscreen, providing a second line of defense against UV-induced aging.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesAll Skin Types
Country of originSouth Korea
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 visibly brightens skin tone and fades uneven patches, 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 uneven texture. 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.
Vitamin C neutralizes free radicals and inhibits melanin production for brighter, more protected 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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About the brand

OriginSeoul, KR
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