How do I interpret the results of my search?

After submit your search, Sezia will check for any ingredients that may affect Malassezia yeasts. Matched ingredients will be flagged in red, yellow, or orange, indicating their potential to cause a reaction. Regardless of your results, we always recommend conducting patch tests before using new products. If you experience a reaction, discontinue use and consult your physician.

How do the ingredient ratings work?

Sezia applies a rating to each ingredient to help you assess the potential impact it will have on your skin. These ratings help you assess a product's safety and determine whether its worth it to conduct a patch test. They can also help you identify potential triggers if you do experience a reaction. Explore our ingredient ratings to learn how Sezia assesses each ingredient.

Will all flagged ingredients make my skin react?

Whether your skin reacts to a particular ingredient can vary based on several factors. Each species of Malassezia have distinct metabolic requirements and the composition and concentration of an ingredient can influence its impact. Your skin's natural microbiome also plays a significant role. Due to these complexities, an ingredient flagged by Sezia is not guaranteed to cause a reaction. You can learn more about ingredient interactions with Malassezia yeasts within the individual ingredient categories.

How does Sezia decide what ingredients are flagged?

When Sezia performs a scan, your search text is formatted to ensure accurate interpretation of delimiters and special characters. After cleaning the text, Sezia evaluates it against ingredients known to interact with Malassezia yeasts. Each category of ingredients has specific matching requirements that are defined using regular expressions (search patterns). You can learn more about Sezia's matching requirements within the individual ingredient categories.