It seems odd to have to define how I’m doing my research on the ingredients in Halo Beauty, but I prefer to be thorough. These are the basic rules and procedures that I am using for EVERY active ingredient listed in the product.
I chose to search in three places. The first is a specific journal-the Journal of Investigative Dermatology (JID). This journal is published by the Nature Publishing Group and is generally considered to be a very high-quality journal, probably the top journal in the field for dermatology research. I also searched the PubMed database created and maintained by the National Library of Medicine and the National Institute of Health. This database generally indexes research of a medical nature and is usually my first stop. Finally, I searched with Google Scholar, which is the most broadly-based search engine but still focused on journals and patents. I kept the search terms the same for each component of the Halo Beauty supplement. Although numbers of results from each search are provided as a guide, they include the results that are not specific (for example, when searching for Vitamin C, many articles were for vitamin D or other unrelated terms). These articles were not evaluated. Search results often included research on varying skin conditions, which were also excluded: I wanted to focus on relatively normal, healthy skin and issues that affect everyone: aging and sunburn for example.
I have access to University libraries, including journal subscriptions and databases. If I was not able to obtain the full text of a particular article in a timely manner, I will not discuss that article because I have not been able to actually look at the data and results, so it is not fair for me to draw conclusions based on work I cannot see. I will not provide or discuss results based on reading an abstract alone.
In doing this research, I set a timer for one hour for each ingredient to give each equal time. This did not include time to write the summaries or record videos.
If I refer to significance, I am specifically referring to statistical significance. I did not take the required time to judge whether the statistical tests were appropriate for the study design.