Is Silybum Marianum Seed Oil natural?

Q: Is Silybum Marianum Seed Oil natural?

Silybum Marianum Seed Oil has a Natural Origin Index (NOI) of 1.00 (scale 0–1) per ISO 16128. Milk thistle seed oil is a pressed vegetable oil; every fatty-acid and glycerol carbon is plant-derived. An NOI of 1.00 means 100% of its molecular mass is traceable to a natural, renewable source.

Yes. Milk thistle seed oil is a pressed vegetable oil; every fatty-acid and glycerol carbon is plant-derived.

INCI nameSilybum Marianum Seed Oil

CAS84604-20-6

FunctionSkin Conditioning

FeedstockObtained by cold-pressing the seeds of milk thistle,…

How we scored it

Fixed vegetable oil expressed from seeds; entirely plant-derived → 1.0

What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Obtained by cold-pressing the seeds of milk thistle, Silybum marianum. No petrochemical route exists.

In plain English

An oil pressed from milk thistle seeds. Used in skincare to condition and soften skin.

CosIng definition: Silybum Marianum Seed Oil is the fixed oil expressed from the seeds of the Lady's Thistle, Silybum marianum (L.), Asteraceae

References

1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
2SILYBUM MARIANUM SEED OIL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
3SILYBUM MARIANUM SEED OIL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SILYBUM%20MARIANUM%20SEED%20OIL