It depends on the source. Glycerin can be made from animal fat, from vegetable oils, or synthetically from petroleum. All three are labelled simply “glycerin” or “glycerine,” so the panel usually won’t tell you.
Glycerin is worth understanding because it’s in an unusually wide range of products — far more personal care than food.
The three sources
Vegetable oils. Soybean, palm, coconut, rapeseed. Vegan. This is the most common commercial source today.
Animal fats. Usually tallow. Not vegan. Historically the dominant source, and still used.
Petroleum, synthetically. Vegan in the sense of containing no animal material, though not everyone considers petroleum-derived ingredients acceptable for other reasons.
The finished glycerin is chemically identical regardless of origin, which is exactly why the label doesn’t distinguish.
Where you’ll find it
Personal care — this is the big one:
- Moisturizers, serums, and lotions
- Soap and body wash
- Toothpaste and mouthwash
- Shampoo and conditioner
- Shaving products
- Lip balm
Food:
- As a humectant in baked goods and bars
- As a sweetener and bulking agent
- As a carrier for flavours and colours — which means it can be inside a “natural flavour” without appearing separately
Supplements and medicine:
- Softgel capsule shells
- Liquid supplements and syrups
- Cough medicine and oral suspensions
- Suppositories
Other: e-liquids, where “VG” means vegetable glycerin, and some inks and antifreeze products.
What it’s called
- Glycerin or glycerine — same thing, different spellings
- Glycerol — the chemical name
- E422 — European designation
- Vegetable glycerin or VG — explicitly plant-derived
Also watch for derivatives, which carry the same question:
- Glyceryl stearate
- Glyceryl caprylate
- Polyglycerol esters
- Mono- and diglycerides — built from the same chemistry
How to tell
Look for “vegetable glycerin.” When a manufacturer specifies it, that’s reliable. Many do, because it’s a selling point.
Check for a certification mark. A vegan-certified product has had this verified — sourcing confirmation for ambiguous ingredients like glycerin is part of what certification involves.
Contact the manufacturer. Often they’ll need to ask their supplier, so expect it to take a few days.
Consider the product category. Personal care and cosmetics skew heavily toward vegetable glycerin, partly because plant-derived positioning sells. Pharmaceutical and industrial applications are less predictable.
A note on kosher symbols
A kosher pareve symbol means a product contains neither meat nor dairy. For glycerin specifically, that rules out the most common animal source.
It isn’t a vegan guarantee — pareve permits eggs, fish and honey, none of which are relevant to glycerin but matter elsewhere in the product. But as a signal about the glycerin itself, it narrows things considerably.
What’s most likely
In practice, most glycerin in consumer products today is plant-derived. Much of the global supply is a by-product of biodiesel production and soap manufacture, both of which run largely on vegetable oils.
But “most likely” isn’t “verified,” and for anyone avoiding animal products strictly, the label alone won’t get you there.
The short version
Usually plant-derived, occasionally animal, sometimes petroleum, and rarely specified. Look for “vegetable glycerin,” a certification mark, or ask.
Glycerin is one of several ingredients declared on labels with no indication of origin. VegeCert is a non-profit certification program for vegan and vegetarian food, supplement and personal care products — our prohibited ingredients list sets out how we handle ingredients like this one.
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