Contact Us

COSRX welcomes questions about the store's current product categories: Custom Bundle, orders, delivery, returns, payments, privacy, and general customer care.

Before Sending a Return

An order number helps COSRX respond more quickly to delivery, product, payment, or return questions.

Wait for COSRX to confirm the return and provide the prepaid or otherwise free shipping method before dispatching the item.

Verified Contact Details

Contact COSRX Email address: support@cosrxbalance.shop Telephone: 512-656-6067 Mailing and physical address: 111 Marquette Ave, Vallejo, California, 94589, United States

COSRX responds during Monday to Friday, 9:00 AM–5:00 PM (Pacific Time (PT)); these hours follow the store timezone, or local time when a named timezone is unavailable.

Merchant Information

Business name: COSRX
Brand or store name: COSRX
Email: support@cosrxbalance.shop
Phone: 512-656-6067
Physical address: 111 Marquette Ave, Vallejo, California, 94589, United States
Customer service hours: Monday to Friday, 9:00 AM–5:00 PM (Pacific Time (PT))