Science
Mechanism of Action
This extract primarily acts as a potent antioxidant, neutralizing free radicals that contribute to oxidative stress and premature skin aging. Research suggests its capability to influence sebum overproduction, offering a potential strategy for blemish management, alongside its documented skin-calming effects.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Reported cosmetic use levels of 0.1% to 0.5% demonstrate efficacy for antioxidant, anti-aging, sebum reduction, and skin soothing properties.
Transparency
Dusting Analysis
No data available suggests this ingredient is commonly used at sub-effective concentrations. Its reported effective range is clearly defined.
The Formula
Formulation
Stability
The extract maintains optimal stability and activity within a pH range of 6.5 to 8.5, reflective of its natural marine environment. To preserve its integrity, products containing this ingredient should be shielded from elevated temperatures and direct solar exposure.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel categorized brown algae-derived ingredients, including Skeletonema costatum extract, as having 'insufficient data' for a definitive safety assessment. While an allergic skin reaction (H317) was listed on one Safety Data Sheet, it was likely attributable to a co-formulated known sensitizer (1,2-benzisothiazol-3(2H)-one). The same SDS indicated no direct irritation to eyes and skin from the individual components, and INCIDecoder rates its irritancy as low.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Skeletonema costatum extract is a valuable marine-derived ingredient, offering promising antioxidant, anti-aging, sebum-reducing, and soothing benefits with low reported irritancy, despite pending comprehensive safety data from CIR.
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