Mannan
AKA “Mannoglycan, CHEBI:28808, (2S, 3S, 4S, 5S, 6R)-2-[(2R, 4R, 5R, 6S)-6-[(2R, 6S)-4, 5-dihydroxy-2-(hydroxymethyl)-6-[(2R, 3R, 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, alpha-D-Mannan, 6R)-2-((2R, 6S)-6-((2R, 5-dihydroxy-2-(hydroxymethyl)-6-((2R, 6-trihydroxy-2-(hydroxymethyl)oxan-3-yl)oxyoxan-3-yl)oxy-4, 5-dihydroxy-2-(hydroxymethyl)oxan-3-yl)oxy-6-(hydroxymethyl)oxane-3, RefChem:389104, GlyTouCan:G07552DD, 52002-03-6, DTXSID201019163
Ingredient
Ingredient Facts
Mannan
AKA: Mannoglycan, CHEBI:28808, (2S, 3S, 4S, 5S, 6R)-2-[(2R, 4R, 5R, 6S)-6-[(2R, 6S)-4, 5-dihydroxy-2-(hydroxymethyl)-6-[(2R, 3R, 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, Alpha-D-Mannan, 6R)-2-((2R, 6S)-6-((2R, 5-dihydroxy-2-(hydroxymethyl)-6-((2R, 6-trihydroxy-2-(hydroxymethyl)oxan-3-yl)oxyoxan-3-yl)oxy-4, 5-dihydroxy-2-(hydroxymethyl)oxan-3-yl)oxy-6-(hydroxymethyl)oxane-3, RefChem:389104, GlyTouCan:G07552DD, 52002-03-6, DTXSID201019163
Ingredient · Film Forming · EWG: 4
Synthetic
Occlusive
Not Clean
Mannan has been reported in Aloe maculata, Hyphaene thebaica, and Amorphophallus konjac with data available.
Formula
C24H42O21
Mol. Weight
666.60
CAS #
9036-88-8, 51395-96-1
Form
Powder
State
Beige powder; [Sigma-Aldrich MSDS]
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Moisturizing
Wound Healing
Strengthens Barrier
Creates protective layer
Traditional Use
A natural polysaccharide derived from plant sources like konjac and locust bean gum, used historically in traditional Asian cooking and traditional medicine as a thickening agent. Adopted in modern cosmetics in the mid-20th century as a stabilizer and thickener.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
Dermal absorption: 2%. Source: CIR Safety Assessment (CIR Seq 680).
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR