Macrocystis pyrifera (Kelp)
AKA “Macrocystis Pyrifera (Kelp) Extract
Synthetic
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Ingredient Facts
Macrocystis pyrifera (Kelp)
AKA: Macrocystis Pyrifera (Kelp) Extract
Synthetic · Thickener | Skin Conditioning | Humectant · EWG: 4
Plant-Derived
Humectant
Skin Conditioner
Marine
Synthetic
Clean
Science: Functions: VISCOSITY CONTROLLING Safety Ratings: CIR: Safe as used
CAS #
347174-92-9
Form
Powder
Plant-Derived
Synthetic. Macrocystis pyrifera is a brown kelp species harvested from cold ocean waters off coastal regions worldwide. The kelp is processed through aqueous extraction and purification to isolate polysaccharides used as thickening agents.
Function
Thickener | Skin Conditioning | Humectant
Benefits
Controls Viscosity
Antioxidant Protection
Reduces Inflammation
Locks In Moisture
Traditional Use
Used for centuries in traditional Asian medicine, particularly in China and Japan, as a nutrient-rich food and topical remedy for skin health and joint conditions. Applied in traditional skincare practices for its mineral and iodine content.
Skin Types
all-skin-types
Best For
Target
Dullness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Moderate Irritant
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR