On 22 November 2025, Brazil’s National Council for Advertising Self-Regulation (CONAR) introduced new rules to combat greenwashing in advertising. The changes cover biodiversity, climate change, and waste disposal, reinforcing the sector’s commitment to environmental protection.
Two new articles encourage responsible socio-environmental communication and set guidelines for sustainability claims and technical terminology.
Advertisers must provide detailed data on emissions, carbon offsets, and product life cycles, along with specific deadlines and action plans for environmental goals. These changes aim to ensure transparency and prevent misleading sustainability claims.

On 23 December 2024, Canada’s Competition Bureau published draft guidelines concerning environmental claims and compliance with the Competition Act (the “Act”) for public consultation. Updated guidance on environmental claims has been much anticipated following recent amendments to the Act that explicitly prohibit greenwashing as a form of deceptive marketing.

Legal action against sustainability or green claims (‘greenwashing’) is on the rise. Consumers and NGOs are increasingly seeking out legal avenues to hold companies accountable for allegedly misleading advertisements on sustainability. One of these avenues in the Netherlands is the Advertising Code Committee (ACC), which regularly handles complaints on greenwashing and other potential misleading statements.

It comes as no surprise that class actions targeting greenwashing claims — or green advertising — continue to rise in number and complexity.
Although consumer demand and regulatory actions have increasingly motivated businesses to make public statements about their sustainability practices and commitments to climate change, now is the time to take a step back and reevaluate those sustainability claims and marketing. Vague, unverified and unsubstantiated claims can all too easily lead to allegations of greenwashing.