Gloshell
Products

This page is part of Gloshell’s Coupang Partners activity, and Gloshell receives a set commission on purchases made through it.

Vitamin Source C25 O Serum

Vitamin Source C25 O Serum

SkincareSerums / Essences30ml

See on Coupang

What the ingredients say

Read from the label order, stated amounts and each ingredient’s clinical evidence

Panthenol is in, but the amount cannot be told.

  • 1 essential oil
  • 4 labelled fragrance allergens

Best-supported ingredient per concern

  • Skin barrierPanthenolevidence B+59% chance of enough
  • Dark spotsAscorbic Acidevidence B+51% chance of enough
  • LinesAscorbic Acidevidence B51% chance of enough
  • DrynessPanthenolevidence C59% chance of enough
  • FirmnessAscorbic Acidevidence C51% chance of enough

Evidence-graded ingredients and how much is in

Panthenol59% chance of enough

No amount is stated. Judging by 155 products that state it at this place on the label, the chance it reaches the amount studies used is about 59%.

Skin barrier B+ · Dryness C

When morning and evening · low irritation

Ascorbic Acid51% chance of enough

No amount is stated. Judging by 44 products that state it at this place on the label, the chance it reaches the amount studies used is about 51%.

Dark spots B+ · Lines B · Firmness C

When morning · moderate — start every other day

Bisabolol59% chance of enough

No amount is stated. Judging by products that state an evidence-graded ingredient at this place on the label, the chance it reaches the amount studies used is about 59%.

Dark spots B-

When morning and evening · low irritation

Resveratrol56% chance of enough

No amount is stated. Judging by products that state an evidence-graded ingredient at this place on the label, the chance it reaches the amount studies used is about 56%.

Lines C

When evening · low irritation

Allantoinlikely enough

No amount is stated. Judging by products that state an evidence-graded ingredient at this place on the label, the chance it reaches the amount studies used is about 68%.

Skin barrier D

When morning and evening · low irritation

2 more evidence-graded ingredients
Asiaticosidelikely too little

No amount is stated. Judging by 33 products that state it at this place on the label, the chance it reaches the amount studies used is about 13%.

Skin barrier C

When morning and evening · low irritation

Tocopherol23% chance of enough

No amount is stated. Judging by 16 products that state it at this place on the label, the chance it reaches the amount studies used is about 23%.

Lines D

When morning · low irritation

How this was read

Labels list ingredients above 1% from most to least, then those at 1% or less in any order. A product filed with Korea's MFDS as functional is read as holding the notified amount of its efficacy ingredient when the label carries only one for that effect, and anything listed before an ingredient of known amount as holding at least that much. Amounts in the product name or official description are used only where the label order allows them. Where no amount is stated, the chance of reaching the study amount comes from other products that state the same ingredient at the same place on their labels. Evidence grades were set by reading each ingredient's studies.

A
several randomised trials or a meta-analysis
B
one or two randomised trials
C
uncontrolled or multi-ingredient studies
D
lab work or a record only

A reading of ingredient evidence and the label, not a guarantee that this product works.

Ingredients

Full ingredient list as published on the official product page, in descending order of content.

Declared fragrance allergens

The label marks these as fragrance allergens that must be declared. They are not impurities, and most people do not react to them.

Limonene · Linalool · Citral · Citronellol

How to use

Directions and cautions found on the package or public product information.

Warnings
1. 화장품 사용 시 또는 사용 후 직사광선에 의하여 사용부위가 붉은 반점, 부어오름 또는 가려움증 등의 이상 증상이나 부작용이 있는 경우 전문의 등과 상담할 것 2. 상처가 있는 부위 등에는 사용을 자제할 것 3. 보관 및 취급 시 주의사항 가) 어린이의 손이 닿지 않는 곳에 보관할 것 나) 직사광선을 피해서 보관할 것 DETAIL INFO SHOP GUIDE REVIEW(0) Q&A(0) 상품결제정보 고액결제의 경우 안전을 위해 카드사에서 확인전화를 드릴 수도 있습니다. 확인과정에서 도난 카드의 사용이나 타인 명의의 주문등 정상적인 주문이 아니라고 판단될 경우 임의로 주문을 보류 또는 취소할 수 있습니다. 무통장 입금은 상품 구매 대금은 PC뱅킹, 인터넷뱅킹, 텔레뱅킹 혹은 가까운 은행에서 직접 입금하시면 됩니다. 주문시 입력한 입금자명과 실제입금자의 성명이 반드시 일치하여야 하며, 7일 이내로 입금을 하셔야 하며 입금되지 않은 주문은 자동취소 됩니다.

Product details

Shelf life / period after opening
제조번호 및 사용기한 별도표시
1Shelf life / period after openingKorean-market product · Observed 2026-09-24