National Advertising Division Finds Claim that Kerasal Fungal Nail Renewal “Starts Improving Nail Appearance in Just 2 Days” Supported

For Immediate Release
Contact: Abby Hills, Director of Communications, BBB National Programs

703.247.9330 /

New York, NY – July 21, 2021 – The National Advertising Division (NAD) of BBB National Programs determined that Advantice Health, LLC provided a reasonable basis for the claim that its Kerasal Fungal Nail Renewal product “starts improving nail appearance in just 2 days.” 

The claim at issue, which appeared on product packaging and in internet advertising, was originally challenged by Arcadia Consumer Healthcare in 2020. However, after NAD reached its decision in that proceeding, NAD was informed that the challenger had publicized the proceeding in violation of BBB National Programs’ Policies and Procedures. Therefore, pursuant to these rules, NAD closed the case and reopened it through NAD’s monitoring program. The advertiser initially appealed the decision but withdrew its appeal and agreed to comply with NAD’s recommendations. 

Shortly thereafter, the advertiser petitioned to reopen the matter, explaining that it had conducted a new in-home-use test (IHUT) to address the concerns expressed by NAD in the underlying case. NAD granted the advertiser’s petition to reopen.

In support of its claim that Kerasal Fungal Nail Renewal “starts improving nail appearance in just 2 days,” the advertiser relied on the results of a four-day IHUT conducted by a third-party research company. NAD assessed the reliability of the IHUT, noting that a properly conducted IHUT requires certain standards and controls to ensure that the response is free from bias (e.g., blinding, randomization), that there is a representative study population, and that there is proper validation of the results.

NAD appreciated Advantice’s numerous modifications to the IHUT to address NAD’s concerns from the prior matter.

NAD noted that the results of the IHUT revealed that after two days of product use, 61 percent of the 85 subjects who had a reference nail and were doctor diagnosed or picture approved saw at least some improvement in the overall appearance of the nail, a statistically significant result which combined all positive responses. 

Based on the evidence provided, NAD determined that the claim that Kerasal Fungal Nail Renewal product “starts improving nail appearance in just 2 days” was supported.

In its advertiser statement, Advantice stated that it appreciated “NAD’s thorough review of the substantiation to validate the claim that Kerasal Fungal Nail Renewal starts improving nail appearance in only 2 days” and that it was pleased that NAD found “Kerasal performed as well under testing that is controlled and free of the possibility of bias, which better substantiates our claim.”  

All BBB National Programs case decision summaries can be found in the case decision library. For the full text of NAD, NARB, and CARU decisions, subscribe to the online archive.


About BBB National Programs: BBB National Programs is where businesses turn to enhance consumer trust and consumers are heard. The non-profit organization creates a fairer playing field for businesses and a better experience for consumers through the development and delivery of effective third-party accountability and dispute resolution programs. Embracing its role as an independent organization since the restructuring of the Council of Better Business Bureaus in June 2019, BBB National Programs today oversees more than a dozen leading national industry self-regulation programs, and continues to evolve its work and grow its impact by providing business guidance and fostering best practices in arenas such as advertising, child-directed marketing, and privacy. To learn more, visit

About the National Advertising Division: The National Advertising Division (NAD) of BBB National Programs provides independent self-regulation and dispute resolution services, guiding the truthfulness of advertising across the U.S. NAD reviews national advertising in all media and its decisions set consistent standards for advertising truth and accuracy, delivering meaningful protection to consumers and leveling the playing field for business.  

Latest News

Press Release

Media Advisory: FTC Commissioner Rebecca Slaughter to Keynote National Advertising Division “Future of Ad Law” 2021 Annual Conference

New York, NY – September 21, 2021 – In its 50th anniversary year, the National Advertising Division (NAD) of BBB National Programs will host the NAD 2021 Annual Conference virtually next week, running Wednesday, September 29 through Friday, October 1. Members of the media are invited to cover NAD 2021 with...

Read More
Press Release

Children’s Advertising Review Unit Issues Revised Guidelines for Responsible Advertising to Children, Effective January 1, 2022

McLean, VA – July 29, 2021 – BBB National Programs’ Children’s Advertising Review Unit (CARU) today announced the issuance of the revised CARU Advertising Guidelines, widely recognized industry standards to assure that advertising directed to children is not deceptive, unfair, or inappropriate for its intended...

Read the Press Release
Press Release

U.S.-Based BBB National Programs Announced as Winner for “Best Sectoral Initiative” by International Council of Advertising Self-Regulation

On 15 June 2021, the International Council for Advertising Self-Regulation (ICAS) announced the winners of its second edition of the ICAS Global Awards. The objective of the ICAS Awards is to reward initiatives that contribute to responsible marketing practices and a more effective and impactful...

Read the Press Release
Press Release

BBB National Programs Adds FTC Veteran Mamie Kresses as Vice President, Children’s Advertising Review Unit (CARU)

McLean, VA – April 12, 2021 – BBB National Programs, the independent non-profit organization that oversees more than a dozen industry self-regulation and dispute resolution programs, today announced the hire of FTC veteran Mamie Kresses as Vice President, Children’s Advertising Review Unit (CARU). Kresses moves from the...

Read the Release