They categorize products in different ways, considering quite a few variables, like…
- where on the body or hair they’ll be used;
- how much is used on the body (small patch or all over);
- how much of the body is exposed to the product in general (like rinsing off a shampoo);
- how the product is applied (with fingertips or hands);
- whether they’re rinse-off or leave on;
- if there’s the potential for ingestion, like for lip products;
- if there’s potential for phototoxicity of components in the oils;
- and a few other things I’ll share as we go on.
Click here to see a lengthy post on this topic with some great resources along with a cheat sheet to help you work with the fragrances you have or want and these maximum skin exposure levels.