Starbucks Workers United has urged the coffee corporation to address a workplace safety concern over a newly introduced blending powder that, while designed to make drinks look better, is prompting health complaints from baristas, according to the labour union representing them. The union highlighted the situation in late July 2026, noting that the fine dust easily becomes airborne and is causing respiratory irritation across several store locations.
Baristas have documented symptoms on social media and in internal union communications, reporting that the blending powder — which is used to craft the newest summer beverages and maintain beverage quality by preventing liquid separation and ensuring a smooth texture — disperses into the ambient air when scooped from its container. Staff have publicly detailed a range of symptoms, including sore throats, coughing, chest irritation, and headaches.
