Cystoseira tamariscifolia extract

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AKA: Rainbow Wrack, Alga
Plant-Derived
Skin Conditioner
Extract
Not Clean
Cystoseira Tamariscifolia Extract is an extract of the Alga, Cystoseira tamariscifolia, Cystoseiraceae
Family
Cystoseiraceae
Plant Part
Whole Plant
Form
Liquid
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
Traditional Use
A brown seaweed species used in traditional Spanish and North African coastal skincare for centuries. Historically valued for its polysaccharide and mineral content in folk beauty and healing preparations.
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Moderate Irritant
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Antioxidant Protection
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: CosIng · EWG · CIR