Mannan has a Natural Origin Index (NOI) of 1.00 (scale 0–1) per ISO 16128. Entire molecule is a chain of natural hexose sugar units (mannose) linked by glycosidic bonds; no petrochemical fragment present. An NOI of 1.00 means 100% of its molecular mass is traceable to a natural, renewable source.

Is Mannan natural? NOI 1.00 — Is That Natural?

How we scored it

Hexose (mannose) tetrasaccharide, C24H42O21 = 4x C6H10O5(162) minus 3xH2O condensation; natural sugar oligomer throughout. 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

A short natural polysaccharide built from mannose sugar units, typically sourced from plant seeds, wood or microbial cell walls. Produced by extraction or fermentation with no petrochemical building blocks.

In plain English

A natural sugar chain built from mannose units, typically from plant or microbial sources. Forms a film that helps hold a formula together on hair or skin.

Structure

(2S,3S,4S,5S,6R)-2-[(2R,3S,4R,5R,6S)-6-[(2R,3S,4R,5S,6S)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2R,3R,4R,5S,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol

PubChem CID 25147451 ↗

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.
2Mannan. PubChem CID 25147451. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
3MANNAN. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
4MANNAN. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=MANNAN