Posts circulating widely claim that Starbucks is “putting silica powder into drinks and calling them Refreshers.” Many posts suggest the company is secretly adding a hazardous industrial chemical to beverages, with some warning customers that drinking the products could cause serious health problems.

Our investigation found that Starbucks has confirmed the powder contains a small amount of food-grade silica, not crystalline silica, and says it is safe for use in food. The evidence therefore does not support claims that Starbucks is putting a dangerous industrial silica product into customers’ drinks. 

Social Media Posts

The claim has been shared widely across multiple social media platforms in recent weeks. The claim implies that Starbucks is “adding silica powder” to its new Refreshers, often without explaining what type of silica is involved. 

Source | Archive

Source | Archive

Fact Check

Starbucks Confirms the Blending Powder Contains Food-Grade Silica

In July 2026, Starbucks introduced Blended Refreshers, a line of frozen beverages that include a proprietary blending powder to improve texture and prevent ingredient separation.

After social media posts raised concerns about the powder, Starbucks published an official statement confirming that the product contains a small amount of food-grade silica, also known as silicon dioxide, along with other common food ingredients. According to the company, the ingredient helps beverages blend consistently and “supports a consistent beverage experience.” Starbucks also emphasized that the powder does not contain crystalline silica and is safe for use in food. 

The company stated:

“The product used in our coffeehouses is a blending powder which contains a small amount of food-grade silica… It does not contain crystalline silica and is safe for use in food.” 

This statement directly contradicts viral posts suggesting Starbucks is secretly adding dangerous industrial silica to beverages.

The blending powder’s ingredient list, reported by multiple media outlets and visible in product information shared by baristas, includes ingredients commonly used in processed foods, including gum arabic, maltodextrin, xanthan gum, natural flavoring, stevia extract, and silicon dioxide (silica). These ingredients help stabilize frozen beverages and keep them from separating after blending. (Source)

What Is Silicon Dioxide?

Much of the confusion surrounds the term “silica.” Chemically, it refers to silicon dioxide (SiO₂), but biologically, not all forms are identical. The additive used in foods, amorphous silicon dioxide, or “food-grade silica”, is a common anti-caking agent that helps prevent clumping in powdered products like drink mixes, seasonings, and coffee creamers.

Because it is chemically stable, largely insoluble, and poorly absorbed by the digestive system, it functions as a processing aid rather than an active ingredient. Its use is widespread throughout the food industry, including in Starbucks’ own existing products (Source). Consequently, identifying “silica” on a label does not inherently indicate a hazard; health risk depends entirely on the form of silica and the method of exposure, a crucial distinction often overlooked in viral claims.

Food-Grade Silica Is Not the Same as Crystalline Silica and Is Widely Used in Foods

The viral claim incorrectly equates all forms of silica. Scientists distinguish between food-grade amorphous silicon dioxide, a common, safe additive, and crystalline silica, an industrial mineral linked to serious occupational lung diseases like silicosis and COPD when inhaled over long periods. (Source)

Unlike industrial silica, the synthetic amorphous silica used in Starbucks’ blending powder lacks the crystalline structure responsible for these occupational hazards. Starbucks has confirmed its powder contains only food-grade silica and is free of crystalline silica. (Source)

International safety bodies, including the European Food Safety Authority (EFSA) and the Joint FAO/WHO Expert Committee on Food Additives (JECFA), maintain this crucial distinction. They evaluate food-grade silicon dioxide (E551) as a safe oral additive, explicitly separating it from the hazards associated with inhaling industrial crystalline silica. (Source)

Regulatory agencies globally affirm that food-grade amorphous silica is a safe dietary additive, maintaining a strict distinction from the respiratory hazards posed by industrial crystalline silica.

The Real Concern Involves Workplace Exposure, Not Drinking the Beverage

While consumer-safety claims are misleading, baristas have raised legitimate workplace concerns. Starbucks Workers United reported that the blending powder can become airborne during preparation, potentially causing respiratory irritation. Occupational experts emphasize that inhaling fine airborne particles is distinct from ingesting them. Any fine food powder can cause temporary respiratory irritation during repeated handling without posing a consumer safety risk (Source). Crucially, OSHA regulations on ‘respirable crystalline silica’ target hazardous industrial dust, not food-grade additives.

Conclusion

The claim that Starbucks is “putting silica powder into drinks and calling them Refreshers” is misleading. Starbucks has confirmed that its new blending powder contains a small amount of food-grade (amorphous) silicon dioxide, a food additive used throughout the food industry to improve consistency and prevent clumping. This ingredient is not the same as respirable crystalline silica, the form linked to silicosis, lung cancer and other occupational diseases through prolonged inhalation.

Starbucks Workers United has reported that the blending powder may cause throat irritation and coughing among baristas when it becomes airborne during preparation. While this raises concerns about occupational exposure to airborne dust, there is no evidence that consuming the finished beverages presents the health risks associated with inhaling crystalline silica.