Brightening antioxidant
13.5% Pure Vitamin C
INCI: Ascorbic Acid
13.5% water-soluble pure vitamin C — the hero of the formula, listed second on the label — for a brighter, more even-looking tone.
13.5% Pure Vitamin C Ampoule
13.5% Pure Vitamin C for Radiant-Looking Skin
UNI&CORE Vita C 13.5 Super Brightening Ampoule · 1.06 oz (30 g)
A brightening ampoule with 13.5% pure vitamin C (ascorbic acid), stabilized in a dual-layer formula and kept highly hydrated so the water-soluble vitamin C works its best — for brighter, more luminous-looking skin in 7 days.
- 13.5% pure vitamin C (ascorbic acid)
- Dual-layer stabilized formula
- +35.6% radiance in 7 days*
- Glutathione + camu camu
- Made in Korea
Official UNI&CORE listing on Amazon.com · Price, delivery & reviews on Amazon
Sound familiar?
When skin needs a reset
01
Dull, tired-looking skin
Late nights, city air and dry indoor heat can leave skin looking flat and lackluster.
02
Uneven-looking tone
Spots and patches make makeup work harder and skin look less even.
03
Loss of glow and bounce
When skin looks matte and feels less springy, even a good routine can feel like it isn't showing.
The Film
Vita C 13.5 Ampoule, in motion.
Key Benefits
What it does for your skin
- Key ingredient
- 13.5% pure vitamin C (ascorbic acid)
- Size
- 1.06 oz (30 g), pump bottle
- Step
- Ampoule / Serum
- Claim on box
- Brightening & Radiance
- Best for
- Dull, uneven-looking skin
- Made in
- Korea
- ✦
Multi-care brightening
13.5% pure vitamin C delivers antioxidant care, a brighter-looking tone and springier-feeling skin in one step.
- ✦
Stabilized, highly hydrated
A dual-layer formula keeps the vitamin C stable, and a high hydration level helps water-soluble vitamin C perform.
- ✦
Visible in 7 days
In a 7-day human application test, skin glow improved by 35.6% and elasticity by 14.3%.*
Tested Results
The numbers behind the glow
+35.6%
skin glow (radiance) after 7 days
6.029 → 7.736
+14.3%
skin elasticity after 7 days
47.768 → 54.032
7.2%
improvement in a skin-pigmentation measurement after 7 days
128.698 → 118.698
95.2%
say “I am satisfied with the product”
Satisfaction survey after 7 days of use
90.5%
say skin looks more luminous and glowing
Satisfaction survey after 7 days of use
90.5%
say skin feels more elastic
Satisfaction survey after 7 days of use
1. Human application test after 7 days of use, 21 adults aged 20–60, SKINMED Co., Ltd. Clinical Trial Centre (published on the official UNI&CORE product page). Individual results may vary.2. User satisfaction survey after 7 days of use, 21 adults aged 20–60, SKINMED Co., Ltd. Clinical Trial Centre.*Results are from a human application test and a satisfaction survey (21 adults aged 20–60, 7 days, SKINMED Co., Ltd. Clinical Trial Centre) and may vary by individual. This product is a cosmetic and is not intended to diagnose, treat, cure or prevent any disease.
Now on Amazon.comShop the official listing
Get Vita C 13.5 Ampoule on Amazon
13.5% Pure Vitamin C (Ascorbic Acid) · 1.06 oz (30 g)
- Official UNI&CORE listingThe genuine product, sold through our official Amazon.com listing.
- Secure Amazon checkoutPay with your Amazon account — saved addresses, cards and order tracking.
- Reviews & today's priceRead customer reviews and see the current price, delivery options and Prime eligibility.
Buy on Amazon (opens Amazon.com in a new tab)Opens Amazon.com in a new tab
Why UNI&CORE
What makes it different
01
13.5% pure vitamin C
Ascorbic acid — the pure form of vitamin C — at 13.5%, listed second on the US label right after water.
02
Dual-layer stabilization
Pure vitamin C is notoriously unstable. A double-layer process keeps it stable, with a high hydration level so water-soluble vitamin C performs.
03
Results you can see in 7 days
Tested on 21 adults: +35.6% radiance and +14.3% elasticity after just 7 days of use.*
Key Ingredients
Built around one hero
Brightening partner
Glutathione
INCI: Glutathione
Paired with vitamin C for brightening power from deep within, for a clearer, more radiant-looking complexion.
Vitamin C-rich fruit
Camu Camu
INCI: Myrciaria Dubia Fruit Extract
An Amazonian superfruit naturally rich in vitamin C, adding another layer of brightening care.
Skin antioxidants
Turmeric & Beta-Carotene
INCI: Curcuma Longa (Turmeric) Root Extract · Beta-Carotene
Powerful plant antioxidants that help defend skin against everyday environmental stress — and give the ampoule its natural yellow color.
Comfort & moisture
Calming Complex
INCI: Fraxinus Rhynchophylla Extract · Nelumbo Nucifera Seed Extract · Beta-Glucan · Panthenol · Opuntia Ficus-Indica Fruit Extract
Ash tree and lotus seed extracts, beta-glucan, panthenol and prickly pear minimize irritation with a variety of moisturizing and calming ingredients.
Bounce
Hydrolyzed Elastin
INCI: Hydrolyzed Elastin
A key ingredient for skin that feels firmer and springier, alongside beta-carotene.
Full ingredient list
Water, Ascorbic Acid, Butylene Glycol, Dipropylene Glycol, Propanediol, Caprylic/Capric Triglyceride, Propylene Glycol Dicaprylate/Dicaprate, Polysorbate 60, Glutathione, Glycerin, Glyceryl Stearate SE, Panthenol, Chitosan, Sodium Gluconate, Sodium Hyaluronate, Helianthus Annuus (Sunflower) Seed Oil, Dimethicone, Xanthan Gum, Guar Hydroxypropyltrimonium Chloride, Sodium Metabisulfite, Fraxinus Rhynchophylla Extract, Nelumbo Nucifera Seed Extract, Inula Britannica Flower Extract, Phaseolus Radiatus Seed Extract, Opuntia Ficus-Indica Fruit Extract, Myrciaria Dubia Fruit Extract, Daucus Carota Sativa (Carrot) Seed Oil, Daucus Carota Sativa (Carrot) Root Extract, Curcuma Longa (Turmeric) Root Extract, Terminalia Ferdinandiana Fruit Extract, Beta-Glucan, Phytic Acid, Betula Platyphylla Japonica Bark Extract, Tocopherol, Rumex Crispus Root Extract, Hydrolyzed Elastin, Disodium EDTA, Sodium Hydroxide, Citrus Paradisi (Grapefruit) Fruit Extract, 1,2-Hexanediol, Ethylhexylglycerin, Fragrance, Beta-Carotene
As printed on the US label. Always check the packaging of the product you receive.
Texture & Application
A silky ampoule that sinks in
Two pumps spread easily across the face and absorb quickly, leaving skin fresh rather than tacky — so creams and mists go on smoothly afterwards.
- Lightweight
- Fast-absorbing
- Non-sticky finish
- Naturally yellow
How to Use
Your routine, step by step
- 1
Apply 2 pumps
After cleansing, apply 2 pumps and spread evenly over the face, avoiding the eye area.
- 2
Spot-apply
Dab a little more, more delicately, onto areas of concern.
- 3
Finish your routine
Follow with cream and mist to finish your skincare routine. In the morning, always finish with sunscreen.
- Tip: Sensitive skin? For the first two weeks, prep with a toner before the ampoule; after that, try applying it directly after cleansing.
- Tip: The ampoule is naturally yellow from its ingredients. Even once absorbed it can transfer to pillowcases or clothing — wipe spills right away, as they can stain if left.
Caution: External use only. Avoid contact with eyes; if contact occurs, rinse thoroughly with water. Do not use on broken or irritated skin. Discontinue use if irritation or rash occurs. Keep out of reach of children. Store in a cool, dry place away from direct sunlight.
Official Product Details
Everything about Vita C 13.5 Ampoule
The full detail page from UNI&CORE — key points, test results, ingredients and usage, as published by the brand.
- Key points: brightening ampoule with 13.5% pure vitamin C (ascorbic acid), double-layer process with a high hydration level, visible change in 7 days
- Multi-care with 13.5% pure vitamin C: powerful antioxidant care, brightening and skin elasticity
- 13.5% pure vitamin C stabilized by a dual-layer formulation, with a high hydration level for water-soluble vitamin C
- 7-day human application test: +35.6% skin glow (radiance), +14.3% skin elasticity, 7.2% improvement in a skin-pigmentation measurement
- Satisfaction survey after 7 days: 90.5% feel improved elasticity, 90.5% say skin looks more luminous, 95.2% satisfied
- Ingredients: ascorbic acid, glutathione, camu camu (Myrciaria dubia) fruit extract, turmeric root extract, beta-carotene, calming complex, beta-glucan, panthenol, prickly pear extract, hydrolyzed elastin
- How to use in 3 steps, sensitive-skin tip and a note on the natural yellow color
View the full official product page
Source: official UNI&CORE product page (adapted for the US site). Test results are from the brand's human application tests; individual results may vary.
Now on Amazon.comShop the official listing
Get Vita C 13.5 Ampoule on Amazon
13.5% Pure Vitamin C (Ascorbic Acid) · 1.06 oz (30 g)
- Official UNI&CORE listingThe genuine product, sold through our official Amazon.com listing.
- Secure Amazon checkoutPay with your Amazon account — saved addresses, cards and order tracking.
- Reviews & today's priceRead customer reviews and see the current price, delivery options and Prime eligibility.
Buy on Amazon (opens Amazon.com in a new tab)Opens Amazon.com in a new tab
FAQ
Questions, answered
How much vitamin C does the ampoule contain?
13.5% pure vitamin C (ascorbic acid), stabilized in a dual-layer formula. Ascorbic acid is listed second on the US label, right after water.
What results were measured?
In a 7-day human application test with 21 adults aged 20–60 (SKINMED Co., Ltd. Clinical Trial Centre), skin glow improved by 35.6%, elasticity by 14.3% and a skin-pigmentation measurement by 7.2%. 95.2% said they were satisfied with the product. Individual results may vary.
How do I use it?
After cleansing, apply 2 pumps and spread evenly over the face, avoiding the eye area. Dab a little extra on areas of concern, then follow with cream and mist. Use sunscreen in the morning.
Is it suitable for sensitive skin?
If your skin is sensitive, prep with a toner for the first two weeks before applying the ampoule, then try using it directly after cleansing. Patch test first and stop if irritation occurs.
Why is the ampoule yellow?
The color comes from its ingredients, such as turmeric root extract and beta-carotene. It can transfer to pillowcases or clothing even after it absorbs, so wipe any spills right away.
Where can I buy it in the US?
UNI&CORE products are sold on Amazon.com. Use the Shop on Amazon button on this page to go straight to the official listing.
Complete the Routine
Better together
Our 3-step vitamin C routine: cleanse, mask, then lock it in with the ampoule.
13.5% Pure Vitamin C (Ascorbic Acid)
13.5% pure vitamin C. Visible radiance in 7 days.