Digestoa
Additive · Glazing agent

Shellac (E904)

Shellac (E904) is a glazing agent that Digestoa rates as low concern — it's considered safe at the levels used in food.

Digestoa riskNo known risk
TypeGlazing agent
Found inshiny sweets, chocolates and coated confectionery

What is Shellac?

Shellac (E904) is a glazing agent — used to give a shiny, protective coating.

Is Shellac bad for you?

Shellac is permitted in food and Digestoa rates it as low concern. There's no strong evidence it causes harm at the levels typically used in food.

What foods contain Shellac?

Shiny sweets, chocolates and coated confectionery.

Digestoa's take

You don't need to avoid Shellac. It's one of the more benign things on an ingredients list — worth knowing, not worth worrying about.

Safer swaps

Choose less-processed products with short, recognisable ingredient lists.

Frequently asked questions

Is E904 the same as Shellac?
Yes — E904 is the international additive (E-number) code for Shellac.
Is Shellac bad for you?
Digestoa rates Shellac (E904) as low concern. It's permitted in food and considered safe at normal dietary levels.
What are the side effects of Shellac?
No significant side effects are associated with Shellac at the levels used in food.
What foods contain Shellac?
Shiny sweets, chocolates and coated confectionery.
How can I avoid Shellac?
Check the ingredients list for "Shellac" or "E904", or scan the product with Digestoa to see if it's present before you buy.

Related glazing agent additives

Beeswax (E901)Carnauba wax (E903)

Risk ratings reflect Digestoa's editorial assessment synthesising EFSA/IARC opinions and peer-reviewed research. Informational only — not medical advice.