GoodGuide's Data

GoodGuide's scientists have collected data on chemical ingredients, products, brands, and companies from around the world. We aggregate the highest quality data and convert this information into ratings that can be used by non-scientists to easily evaluate products.

Our Sources

GoodGuide currently acquires data from over 1,000 different sources, including scientific institutions, governmental agencies, commercial data aggregators, non-governmental organizations, media outlets and corporations. Product-level information is typically obtained from the manufacturer's website or from product labels.

Data Currency

The age of data used varies by source. Our goal is to refresh product-level information at least once every 18 months.

Access to Data

Our product pages provide consumers with key data used to rate products (e.g., a product’s ingredient list or its available certifications). However, our ratings reflect a complex assessment algorithm that uses an extensive amount of data (e.g., health effects and regulatory lists) that is difficult to republish or even consistently cite via URL in a usable and easy to maintain fashion. Thus, we typically do not provide access to the entire set of data used to determine health concern levels assigned to ingredients, or to rate the nutritional value of a food product.

Commitment to Data Quality

GoodGuide strives to be the most reliable source of information on consumer products. We employ quality assurance and quality control (QA/QC) processes to ensure that the highest standards of data integrity are met and maintained. GoodGuide assesses the quality and credibility of each contributing data source based on the source’s data collection process, public reputation and reviews received by experts in relevant fields. Additionally, our information architecture uses industry-standard identification and cross-referencing systems (e.g., using chemical CAS numbers to connect information about ingredients) to facilitate matching data from external sources. Our QA/QC protocols include procedures to proactively minimize data errors, resolve potential data issues, and ensure timely updates of sources.

Error Reporting and Correction Procedures

If you believe a GoodGuide rating is incorrect or based on inaccurate data, we encourage you to report the issue to us for investigation. Please be sure to identify the relevant GoodGuide URL, error and product name to ensure that we research your complaint appropriately. GoodGuide does not charge any fees for investigating or correcting errors. Upon written request, we will treat submissions as confidential information.

To report an error or share your concerns about our ratings, please email us.

Our science team will review your complaints and any provided documentation and inform you about our determination in a timely manner. Error reports are classified into one of the following:

  • Raw Data Error: If a user provides evidence indicating that GoodGuide contains incorrect information about a product's identity or attributes (e.g., incorrect product-brand relationship, missing product ingredients, etc.), GoodGuide will attempt to confirm the accuracy of proposed corrections using publicly available sources. If a user proposes alternate, more up-to-date information for consideration in rating a product on any given indicator, we will review whether our current data is misleading in the light of the new information provided. In the event that GoodGuide determines a correction or update is warranted, we will proceed to integrate the resulting rating change into our services during our next scheduled database push. If incorrect or out-of-date data materially impacts the rating assigned to a product, GoodGuide will temporarily suspend publishing that entity's record until its score can be publicly updated.

  • Scoring Methodology Dispute: If a user raises concerns regarding GoodGuide’s rating methodology (e.g., maintaining that an ingredient should have a different level of health concern or takes issue with the scoring rules we use),, we will consider a user’s feedback in the context of overall stakeholder feedback on the GoodGuide rating system. We do not implement custom modifications specific to a product to our rating methodologies.. We regularly review and enhance our methodologies in response to user feedback and new scientific or regulatory developments.

Data Gaps

In many cases, data that would be relevant for a thorough assessment of an important attribute is unavailable for a product. This may be because we have not yet identified a credible data source for a given issue or topic. Or it may be that the data are not publicly available because companies have not disclosed critical information. GoodGuide is working collaboratively with key stakeholders around the world, including government agencies, non-profit organizations, private research agencies, and companies to promote the quantity and quality of disclosure of important data to the public. If you are aware of data sources that are not yet included in GoodGuide that would improve our product coverage, please contact us to nominate these sources for evaluation.