Kirkland Signature Ultrashine Dishwashing Liquid

Kirkland Signature Ultrashine Premium Performance Dishwashing Liquid is a heavy-duty concentrated manual dish soap designed to cut through grease and leave dishware sparkling clean.

Kirkland Signature is the private label brand developed and owned by Costco Wholesale Corporation, an American multinational retail corporation founded in 1983 and headquartered in Issaquah, Washington. The private label was launched in 1995 and named after the city of Kirkland, Washington, where Costco's corporate headquarters were previously situated.

Costco partners with major third-party contract manufacturers and consumer goods chemical producers—predominantly located in the United States and Canada—to formulate and package its Kirkland Signature liquid cleaning detergents. In the United Kingdom, Costco Wholesale UK Limited operates wholesale warehouse clubs that distribute these branded products directly to members.