GoodGuide's Data

Through a variety of sources, GoodGuide collects data on chemical ingredients used in consumer products. We aggregate product information and convert that into ratings that can be used by non-scientists to easily evaluate products.

Our Sources

GoodGuide collects ingredient data on consumer products from a variety of sources. Product ingredients (which sometimes include fragrance ingredients for personal care, cosmetics and household chemicals) are disclosed directly from the manufacturer or by referencing a company website or a product label.

GoodGuide currently acquires scientific and regulatory data from varied sources, including inter-disciplinary scientific expert panels such as IARC (International Agency on the Research of Cancer), governmental agencies such as the European Chemicals Agency (ECHA) and other authoritative sources such as the World Health Organization (WHO) and the National Toxicology Program (NTP). These lists are updated from official sources and meticulously reviewed by our experienced staff consisting of over 50 science and regulatory experts.

Data Currency

The age of data used varies by data source. Our goal is to refresh ingredient-level information at least once every 4 months and product-level data every 12 months to assure users are getting the most up-to-date information.

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. Since the actual data set is extensive and requires scientific judgment to sort, we typically do not provide access to the entire data set used to determine hazard concern levels assigned to ingredients When a manufacturer discloses a product’s proprietary “full formulation” directly to GoodGuide to be used to generate a products rating, that information is not shared publicly to respect the protection of a manufacturer’s intellectual property.

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 and expert reviews in relevant fields.

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 so that we may investigate its validity. Please be sure to identify the relevant GoodGuide URL, the identified error and the product name to ensure that we can 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 concern and inform you on 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 confirm the accuracy of the 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 data point, we will review whether our current data requires updating in 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 the appropriate record until its score can be publicly updated.

  • Scoring Methodology Dispute: If a user raises concerns regarding a GoodGuide rating methodology (e.g., maintaining that an ingredient should have a different hazard designation 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. The scoring committee regularly reviews and enhances methodologies in response to cumulative 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 given product. This may be because we have not yet identified a credible data source for a given issue or topic. Alternately, 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, to promote the quantity and quality of disclosure of important data to the public. In the meantime, we will identify these gaps as necessary through the Data Adequacy assessment.