Advertising Claim Substantiation

Advertising claim substantiation means being able to support objective statements in an advertisement with evidence appropriate to what consumers reasonably understand. The U.S. Federal Trade Commission discusses both express claims, such as 'removes stains in five minutes,' and implied claims communicated through images or context. The level and type of evidence needed can depend on the nature of the claim and its consequences.

Businesses should distinguish verifiable factual statements from vague opinions, and avoid inventing rankings, percentages, testimonials, performance guarantees, or customer results. Evidence should exist before the claim is distributed; finding a supporting source later does not automatically correct an earlier unsupported statement. Health, safety, cost-savings, and other consequential claims can require particular care.

For digital content teams, a practical claim register records exact wording, supporting documentation, publication date, and who approved it. Check landing pages, paid ads, social posts, and automated variations consistently. This glossary description is informational, not a legal opinion about a specific campaign.