A French supermarket has begun placing stickers on products to warn shoppers that the supplier has shrunk the product without reducing the price, in an effort to name and shame companies practicing so-called “shrinkflation.”

Also known as package downsizing, shrinkflation refers to the practice of shrinking the size or reducing the quality of a product to reduce costs of producing it, while maintaining sales volumes.

French supermarket Carrefour, the second-largest grocery chain in France, marked 26 items in its stores with labels which read, “This product has seen its volume or weight fall and the effective price by the supplier rise.”

Among the products receiving stickers were Lipton Ice Tea, Lindt chocolate and Viennetta ice cream, which will put pressure on major consumer goods suppliers such as Nestle, PepsiCo and Unilever.

Carrefour reported that a can of Guigoz baby formula manufactured by Nestle has shrunk in size, from 900 grams to 830 grams, while a Viennetta ice-cream cake, produced by Unilever, fell in size from 320 grams from 350 grams.

Meanwhile Pepsico has shrunk its sugar-free peach-flavored Lipton Ice Tea from 1.5 liters to 1.25 liters.

Stefen Bompais, director of client communications at Carrefour said in an interview with Reuters, “Obviously, the aim in stigmatizing these products is to be able to tell manufacturers to rethink their pricing policy.”

Carrefour made the move just prior to the period where brands negotiate deals with retailers over the supply and sales of their products.