Cosmo Gangnam
ERTY 55 Brightening Ampoule 30ml — Brightening
ERTY 55 Brightening Ampoule 30ml — Brightening
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For: Dull & Uneven-Looking Skin
A pharmacist-selected formula: niacinamide and panthenol high in the list, with vitamin C, alpha-arbutin and peptides behind them.
Dull skin is rarely about one thing. Tone, hydration and texture all play a part, and a single-ingredient serum covers only one of them.
ERTY 55 Brightening Ampoule · 30ml
Niacinamide, ferments, vitamin C and nine peptides in one lightweight brightening ampoule.
Bifida ferment lysate and niacinamide lead the active ingredients, followed by panthenol, adenosine and sodium hyaluronate. Three more ferments, ascorbic acid (vitamin C), alpha-arbutin and licorice root extract follow, with a B-vitamin blend and nine peptides later in the list. Part of our professional line for clinic and spa use as well as home routines. Selected by our in-house pharmacist after a full ingredient review.
What You Feel First
Within 10 Minutes
Skin feels hydrated and smooth. The light texture absorbs quickly.
Next Morning
Skin looks fresher and more radiant.
The Concern We Hear Most
"Vitamin C, niacinamide and peptides in one bottle. Is that too much?"
The main work is done by niacinamide and panthenol, both high in the list. Vitamin C, alpha-arbutin and the peptides appear in smaller amounts and support the formula rather than drive it. That makes it an easy daily step rather than an intense serum. It contains added fragrance, so patch test if your skin is sensitive.
Week by Week
Days 1–3
Skin feels hydrated and comfortable.
Week 1
Skin looks fresher and more radiant.
Week 2
Skin tone looks more even.
Week 4
With daily use and SPF, skin looks brighter and smoother. Individual results may vary.
The Ingredients Behind It
Niacinamide & Panthenol
Vitamin B3 for the look of even tone, and provitamin B5 for a moisturised, comfortable feel. Both sit high in the list.
Ferment Blend
Bifida, lactobacillus and bacillus/soybean ferments, a Korean skincare staple for a healthy-looking glow.
Vitamin C, Alpha-Arbutin & Licorice
Ascorbic acid, alpha-arbutin and licorice root extract add to the formula's focus on a brighter-looking complexion.
Peptides & B Vitamins
Nine peptides, including copper tripeptide-1 and palmitoyl pentapeptide-4, plus a B-vitamin blend appear later in the formula.
Skin Type Fit
More Than a Serum
It covers tone, hydration and texture in one light layer, which makes it easy to keep up every day. In the treatment room, it works as the active step before a mask in a brightening facial.
A daily brightening step built on niacinamide, not hype.
Why Our Pharmacist Chose This
"Niacinamide and panthenol do the main work; vitamin C, alpha-arbutin and peptides support them. That balance suits daily use."
— Our In-House Pharmacist
Licensed Korean Pharmacist & Customized Cosmetics Preparation Manager. Every product on cosmogangnam.com passes our in-house pharmacist's ingredient review before listing.
Frequently Asked Questions
Does it contain glutathione?
No. Glutathione is not on the ingredient list. The formula is built on niacinamide, panthenol, ferments, vitamin C, alpha-arbutin and peptides.
Can I use it with retinol?
Yes. Use it in the morning and your retinol at night, or alternate nights if your skin is sensitive. Always use SPF during the day.
Complete Your Routine
→ Follow with a niacinamide or tranexamic acid cream and a daily SPF.
How to Use
1Cleanse and apply toner.
2Dispense 2–3 drops onto your fingertips.
3Press gently over face and neck until absorbed.
4Follow with moisturiser. Use SPF in the morning.
Patch test: apply a small amount to the inner arm and wait 24 hours before first full use. Discontinue use if irritation occurs.
Product Details
| Brand | ERTY |
| Volume | 30ml |
| Origin | Made in South Korea |
| Skin Type | All skin types (patch test if sensitive) |
| Use | AM / PM |
| Key Ingredients | Niacinamide, Panthenol, Bifida Ferment Lysate, Ascorbic Acid, Alpha-Arbutin, Adenosine |
| Fragrance | Contains added fragrance |
| Regulatory | Cosmetic · MFDS (Korea Ministry of Food & Drug Safety) compliant |
| Pregnancy | Consult your healthcare provider before use |
| Full Ingredients | Water, Butylene Glycol, Glycereth-26, Pentylene Glycol, Glycerin, Bifida Ferment Lysate, Niacinamide, Arginine, Betaine, Panthenol, Adenosine, Sodium Hyaluronate, Lactobacillus/Rye Flour Ferment, Lactobacillus/Soymilk Ferment Filtrate, Bacillus/Soybean Ferment Extract, Ascorbic Acid, Hydrolyzed Hyaluronic Acid, Sodium Levulinate, Propanediol, Aphanothece Sacrum Polysaccharide, Alpha-Arbutin, Brassica Campestris (Rapeseed) Seed Oil, Glycyrrhiza Glabra (Licorice) Root Extract, Polyglyceryl-3 Diisostearate, Althaea Officinalis Root Extract, Oryza Sativa (Rice) Bran Extract, Folic Acid, Pantothenic Acid, Pyridoxine, Thiamine HCl, Tripeptide-1, Cyanocobalamin, Riboflavin, Palmitoyl Tripeptide-1, Acetyl Tetrapeptide-2, Acetyl Tetrapeptide-5, Copper Tripeptide-1, Hexapeptide-11, Hexapeptide-9, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-5, Citric Acid, Levulinic Acid, Hydroxyethyl Urea, Polyglyceryl-10 Laurate, Cellulose Gum, Polyglyceryl-4 Laurate, Caprylyl/Capryl Glucoside, Ethylhexylglycerin, 1,2-Hexanediol, Fragrance |
Batch expiry is checked and shared before shipping.
About this product: ERTY 55 Brightening Ampoule (30ml) is a lightweight Korean ampoule for dull and uneven-looking skin. It combines niacinamide, panthenol and ferments with vitamin C, alpha-arbutin, a B-vitamin blend and nine peptides, and contains added fragrance. Part of the cosmogangnam.com professional line, selected by our in-house pharmacist, and shipped from South Korea.
Individual results may vary. This product is a cosmetic and is not intended to diagnose, treat, cure, or prevent any skin condition or disease.
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