murphyBiosaccharide Gum-4
molecular structure · PubChem
AKA: Fermented Polysaccharide
Plant-Derived Synthetic
Skin Conditioner
Clean
OriginProduced through bacterial fermentation of sugars or polysaccharides to create a complex carbohydrate polymer. Synthesized via controlled microbial fermentation followed by purification and stabilization processes.
Biosaccharide Gum-4 is a fermentation gum derived from sorbitol. It is a deacetylated branched polymer consisting of L-fucose, 2-D-glucose and glucuronic acid repetitive units
CAS #
905593-86-4
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Skin Irritant (CIR report on the ingredient group)
CIR report statement covering this group of ingredients / not tested individually (CIR 611)
Not a Sensitizer (CIR report on the ingredient group)
CIR report statement covering this group of ingredients / not tested individually (CIR 611)
Concentration Guide
Leave-on0.004–5%
Rinse-off0.00001–0.006%
0%50%100%
CIR reported use · report published 2016
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR