[ISOI] Brightening Eye Concentrate (17ml)
ISOI

[ISOI] Brightening Eye Concentrate (17ml)

18.70

Size
Free shipping over $80 · Flat rate $9.80
Authentic from Seoul · 5–8 days delivery

Also known as the 'Sensitive Dark Eye Cream,' this product is designed to brighten and care for the delicate skin around the eyes. It aims to improve the appearance of dark circles and fine lines with a gentle, non-heavy formula.


About the Brand

ISOI (an acronym for 'I SO Intelligent') is a prominent South Korean skincare brand founded in 2009 by Jinmin Lee, who sought to create effective, safe solutions for her own sensitive and reactive skin. The brand is built on a philosophy of 'good ingredients,' prioritizing clean, premium, and naturally derived components while strictly excluding suspected harmful chemicals. ISOI is best known for its signature Bulgarian Rose Otto, a high-grade essential oil that serves as a cornerstone of their formulations for its soothing and restorative properties. Their flagship product, the Bulgarian Rose Blemish Care Up Serum, has achieved significant recognition as a long-standing bestseller at major Korean retailers like Olive Young. Positioned as a premium clean beauty brand, ISOI targets 'intelligent consumers' who meticulously scrutinize ingredient lists and seek high-performance, low-irritation skincare. The brand emphasizes transparency and efficacy, often utilizing proprietary technologies to ensure stability without synthetic additives. ISOI has earned distinction for its commitment to safety, being one of the first Korean brands to receive the US EWG VERIFIED mark, and it continues to focus on sustainable, ethical practices in both its formulations and eco-friendly packaging.

Full active list and clinical composition.

Information

This list of ingredients represents all options or variants of this product. Actual ingredients in a given product option may vary from this list. Ingredients subject to change at manufacturer's discretion.

For the most complete and up-to-date list of ingredients, please refer to product packaging.

Korean beauty products are labelled in Korean.
For reference: 제조 Manufacture · 까지 Until · 만료 Expiry

Note

Patch test recommended before first use. For full product information, see our Disclaimer.

Apply from thinnest to thickest consistency. Patch test recommended before first use.

Note

Patch test recommended before first use. For full product information, see our Disclaimer.

Every KCOS order is hand-picked and shipped from Seoul. Flat rate $9.80 worldwide. Free over $80.

Dispatch

1–3 business days from Seoul, South Korea. Tracking provided by email once dispatched.

Delivery

5–8 business days worldwide. Allow extra days during 11.11, Black Friday and Lunar New Year.

Customs

Import VAT and customs fees may apply on arrival, set by your local authorities. We'll always do our best to help if anything unexpected comes up — write to hello@kcosonline.com.

Authenticity

Every product is sourced directly in Seoul by our team. We don't work with third-party warehouses or unverified resellers.

Returns

Due to the nature of cosmetics shipped internationally, we accept returns only for damaged or defective items. Reach out within 14 days of delivery at hello@kcosonline.com.

Suggested Protocol

KCOS — Lab Series