French supermarket chain Carrefour has launched an effort to combat shrinkflation, labelling products that engage in the common practice to tell shoppers they're getting less bang for their buck – or euro.
Shrinkflation occurs when a company reduces the volume of a product but keeps the price steady, meaning buyers get less value for money, often without realising it.
Since Monday, Carrefour has been labelling 26 products that have shrunk in quantity but not in cost.
"This product has seen its volume/weight fall and the effective price charged by the supplier rise," the tags say.
The products that have had the labels slapped on them include Lipton Ice Tea, Lays chips, Lindt chocolate and Viennetta ice cream.
The supermarket said it was aiming to shame suppliers into reducing their prices.
"Obviously, the aim in stigmatising these products is to be able to tell manufacturers to rethink their pricing policy," Stefen Bompais, the director of client communications at Carrefour, told the BBC.
The move comes just months after France's finance minister, Bruno Le Maire, hauled 75 retailers and groups into a meeting about prices across the country.
Le Maire has also called shrinkflation a disgrace and urged companies to lower their prices.
The practice is common in Australia too, with the likes of Weet-Bix, Cadbury chocolate, Mars bars and Pringles just some of the groceries that shrunk in size without a price drop to match.