Chemicals of Concern Highlighter is a free Chrome add-on developed by kchoiuiuc. This add-on is designed to help users identify potentially harmful chemicals in makeup and skincare products.

With Chemicals of Concern Highlighter, users can search for ingredients and highlight chemicals of concern in cosmetics or skincare products. By simply clicking on the highlighted chemical, users can access related documents on Safe Cosmetics to learn more information about the chemical and its potential risks.

To use the add-on, users need to visit a website that displays the ingredients of a product and click the search button. If users want to explore further details about a specific chemical, they can click on the highlighted chemical to access related documents on Safe Cosmetics.

Managing keywords is also made easy with Chemicals of Concern Highlighter. Users can add or remove keywords by clicking the edit keywords button, which will redirect them to the options page. Keywords are stored as a [keyword, index] pair, with the index indicating the line number of the URL of the related documents.

Furthermore, users have the ability to customize the font and background colors used for highlighting. By selecting the desired colors on the popup and clicking the save colors button, users can personalize their highlighting experience.

Chemicals of Concern Highlighter is a useful tool for individuals who are conscious about the ingredients in their makeup and skincare products. With its ability to highlight chemicals of concern and provide access to related documents, users can make more informed choices about the products they use.