Stearic acid can come from coconut and shea, or from beef tallow, and the label looks identical either way. Here is what it does in your creams, how to check if yours is plant-derived, and the other ambiguous ingredients like it.

Niacinamide is vegan, a synthetic form of vitamin B3 with no animal involvement in any brand. Here is where it comes from, what to check in the formula around it, and how to use this popular active properly.

Modern hyaluronic acid is fermented from plant sugars, not extracted from rooster combs as it once was. Here is where it really comes from, what sodium hyaluronate is, and the application mistake that makes it backfire.

Glycerin can come from vegetable oils or from beef tallow, and the ingredient list looks identical either way. Here is why the label cannot tell you, and the three reliable ways to check whether yours is plant-derived.

For sensitive skin, vegan sunscreen comes down to choosing mineral filters over chemical ones. Here is why zinc and titanium suit reactive skin, what makes an SPF vegan, and how to avoid white cast and irritation.