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Moumoujus

HALIDRYS SILIQUOSA EXTRACT.

Avoid CAS - / SKIN CONDITIONING

Halidrys Siliquosa Extract, derived from marine brown seaweed, is a multi-functional ingredient demonstrating hydrating, antioxidant, and anti-inflammatory properties. It also offers potential benefits for anti-aging, skin brightening, and provides a degree of photoprotection.

Summary

Skin conditioning Antioxidant Hydrating Soothing Anti-inflammatory Anti-aging Skin brightening Photoprotective

Science

Mechanism of Action

This extract operates through several key mechanisms to benefit the skin. Polysaccharides within the extract are instrumental in moisture retention, promoting optimal hydration and mitigating dryness. Its rich content of polyphenols and other antioxidants actively scavenges free radicals, thereby protecting skin cells from oxidative stress and contributing to the prevention of premature aging. Additionally, it exhibits anti-inflammatory effects that can soothe and calm irritated or sensitive skin, potentially reducing redness and discomfort. The extract is a natural source of vitamins (A, C, E) and essential minerals (zinc, selenium), which nourish and condition the skin. Specifically, as LIGHTOCEANE® (a patented marine agent), it targets skin lightening and anti-aging by reducing nitric oxide release, inhibiting tyrosinase activity and melanin synthesis, inhibiting melanocyte dendricity, and controlling melanosome transfer to keratinocytes. Beyond this, it provides broad enzymatic protection by inhibiting elastase, collagenase, and hyaluronidase, and offers defense against both UVB and UVA radiation.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Laboratory studies showed potent radical scavenging (antioxidant) activities, with IC50 values ranging from 0.15 to 0.22 mg/mL, which were comparable to positive controls like vitamins C and E. A concentration of 0.15 mg/mL demonstrated superior scavenging activity.
  2. 02 An extract obtained at 150 °C exhibited photoprotective capabilities, with a measured SPF of 2.33 and a PF-UVA of 1.85.

Transparency

Dusting Analysis

Not commonly dusted

Given its diverse and scientifically detailed mechanisms of action, including specific pathways for hydration, antioxidant protection, and advanced anti-aging/brightening (as LIGHTOCEANE®), this ingredient appears to be included in formulations for its intended functional benefits rather than merely for marketing claims at sub-efficacious levels.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Safety

Safety Profile

CIR Status
Insufficient data
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that the available data are insufficient to make a determination regarding the safety of Halidrys Siliquosa Extract under intended cosmetic use conditions. Significant safety concerns exist due to potential high contamination with toxic impurities, specifically iodine, arsenic, and lead.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Avoid

Despite demonstrating various promising benefits, the CIR's conclusion of insufficient safety data coupled with identified high contamination concerns regarding toxic heavy metals renders this ingredient unsuitable for precision skincare formulations.

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