The Ingredient Glossary

At Renée Rouleau, we know everyone’s skin is one-of-a-kind. While our Nine Skin Types help guide you to the right products, this ingredient dictionary lets you take a closer touch. Use it to investigate which ingredients your skin loves (and which ones it doesn’t).

We’ve also included the different names our ingredients might appear under, so you can easily spot them in any product. Plus, we’ve highlighted the multiple benefits of each ingredient—you may be surprised at what you uncover when you get your hands into the details!

While many ingredients are undoubtedly beneficial for your skin, the magic really happens in how they’re formulated together. Each ingredient must work in harmony with the others for a product to deliver its best results.

It’s true that ingredients are usually listed from highest to lowest concentration on a label, but skincare is more nuanced than just a lineup of names. The percentage of an ingredient depends on many factors, and more isn’t always better.

You can’t fully judge an ingredient’s performance just by where it falls on the label. The quality of the ingredient, the amount included, and how it interacts with the other ingredients all determine how it feels and works on your skin. Wanna learn more? Check out Renée’s guide to reading skincare ingredients.