About Us

About Koseon Skincare

Our Story

Koseon Skincare was founded on a simple observation: women over 40 have spent decades buying eye creams that feel luxurious but deliver little visible change. We believed the problem wasn't the customer — it was the format.

Korean skincare laboratories have spent years refining hydrogel delivery formats designed to help active ingredients stay in contact with the skin instead of evaporating off the surface. Koseon was created to bring that approach — Korean-formulated, peptide-infused hydrogel eye masks — directly to customers in the United States.

Our flagship product, the Peptide-Powered Deep Collagen Eye Mask, is formulated in Korea with Acetyl Hexapeptide-8, hydrolyzed collagen, sodium hyaluronate, and botanical extracts including centella asiatica. It is designed to hydrate the delicate eye area and reduce the appearance of fine lines, puffiness, and tired-looking eyes.

What We Believe

Honest formats over marketing promises. Our masks go on white and turn transparent during wear — a visible cue that the essence has been absorbed rather than left sitting on the skin.

Formulated in Korea. Our products are developed and manufactured in Korea in facilities that follow Korean cosmetic manufacturing standards and are registered with the U.S. FDA, as required for cosmetics sold in the United States.

Risk-free trial. Every order is backed by our 30-day money-back guarantee. If you're not satisfied, contact us for a full refund — no restocking fees.

Cosmetics, not medicine. Koseon products are cosmetic products intended for external use. They are not medical devices or treatments, and individual results vary.

Company Information

Legal Entity: Cynic LLC (doing business as "Koseon Skincare")
State of Registration: Indiana, United States

Business Address: 5534 Saint Joe Road, Fort Wayne, Indiana, 46835, United States
Phone: +1 (516) 979-6770

Registration Number / EIN: 921965959
Business Address: 116 Fig Drive, Dix Hills, NY 11746
Email: info@koseonskincare.com
Phone: 6319795770
Business Hours: Monday–Friday, 9 AM–5 PM EST

Customer Service

We respond to all inquiries within 24 hours during business days.