Ingredient Logic
The Ingredient Glossary
One entry per ingredient, written once and surfaced everywhere — on flip cards, on product ladders, and here. If an ingredient is in an ingredientlogic formula, it has a page.
Humectants
Organic Glycerin
A humectant that draws and holds water.
Its job
It keeps the film flexible on skin. Without it a botanical foundation tightens as it sets and starts to sit in fine lines by the afternoon.
Full entry →Humectants
Propanediol
A corn-derived humectant and solvent.
Its job
It keeps the formula from drying out in the tube and helps the botanical extracts stay in solution.
Full entry →