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HASLEA OSTREARIA EXTRACT.

Valuable CAS - / SKIN CONDITIONING

Haslea Ostrearia Extract, derived from a unique blue diatom, is a potent marine ingredient celebrated for its multi-functional benefits. Rich in the extremely hygroscopic pigment marennine, it significantly enhances skin hydration, while offering robust antioxidant and revitalizing properties to promote a smoother, more resilient complexion.

Summary

Skin conditioning Antioxidant Moisturizing Revitalizing Cell renewal boosting Antibacterial Antiviral Antifungal Anti-inflammatory

Science

Mechanism of Action

This extract functions primarily as a skin conditioning agent. Its key component, marennine, is highly hygroscopic, actively drawing and retaining moisture to improve skin hydration, suppleness, and overall texture. Beyond its powerful moisturizing capabilities, Haslea Ostrearia Extract provides revitalizing and re-mineralizing effects, supporting healthy cellular renewal. Furthermore, in vitro studies highlight its potent antioxidant activity, alongside noted antibacterial, antiviral, and antiproliferative properties, contributing to comprehensive skin health and defense.

Research

Clinical Evidence

Medium confidence
Effective range 9.09 µg/mL–50 µg/mL%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 7.5 – 9.6
0 7 14

Stability

Marennine, the blue pigment of Haslea ostrearia, is water-soluble. Its color exhibits pH-dependency, appearing blue in acidic conditions and transitioning to green in more basic (alkaline) environments. Optimal pH for the efficient extraction and desorption of marennine has been observed to be within the range of 7.5 to 9.6.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Specific safety assessments by the Cosmetic Ingredient Review (CIR) or Scientific Committee on Consumer Safety (SCCS) are currently unavailable. However, external databases such as EWG's Skin Deep rate Haslea Ostrearia (Blue Algae) Extract as 'low' for concerns regarding cancer, allergies & immunotoxicity, developmental and reproductive toxicity, and use restrictions. INCIDecoder further supports its low irritancy and comedogenicity profile.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Haslea Ostrearia Extract is a valuable multi-functional ingredient, offering significant hydration, potent antioxidant defense, and revitalizing benefits, suitable for a wide array of skin types and cosmetic formulations due to its low irritancy and comedogenicity.

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