Mannan
AKA “Mannoglycan, (2S, 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
Synthetic
Ingredient Facts
Mannan
AKA: Mannoglycan, (2S, 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
Synthetic · Humectant · EWG: 4
Synthetic
Humectant
Occlusive
Skin Conditioner
Synthetic
Clean
Mannan creates a lightweight protective layer on skin and hair, helping products stay put while maintaining a natural feel.
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.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Viscosity Controlling
Moisturizing
Locks in moisture to keep skin soft and supple throughout the day
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
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
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 Feb 2026
Data: PubChem · CosIng · EWG · CIR