Hydrolyzed Porphyra Yezoensis
AKA “Hydrolyzed Red Algae, Porphyra Yezoensis Extract
Synthetic
Ingredient Facts
Hydrolyzed porphyra yezoensis
AKA: Hydrolyzed Red Algae, Porphyra Yezoensis Extract
Synthetic · Humectant · EWG: 4
Synthetic
Humectant
Skin Conditioner
Hair Care
Marine
Synthetic
Clean
A nutrient-rich seaweed extract that hydrates and softens skin and hair, helping them retain moisture for a smoother, more supple feel.
CAS #
-
Form
Liquid
See origin →
Functions
Hair 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.
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
Traditional Use
Nori seaweed (Porphyra) has been consumed as food in Asian cuisines for centuries but was not traditionally applied topically to skin. The hydrolyzed extract was developed in the modern era as a cosmetic conditioning ingredient.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Moderate Irritant
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR