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HYDROGEN.

Valuable CAS 1333-74-0 / ANTIOXIDANT

Molecular hydrogen (H2) is a potent, selective antioxidant that neutralizes harmful reactive oxygen species without interfering with beneficial cellular signaling. Its extremely small size allows deep skin penetration, offering anti-inflammatory, hydrating, and reparative benefits for diverse skin concerns.

Antioxidant Anti-inflammatory Sebum Regulation Hydration Skin Repair Skin Regeneration Reduces Oxidative Stress Improves Skin Barrier Function Reduces Pore Visibility Reduces Wrinkle Severity Improves Pigmentation Irregularities Supports Collagen Production Supports Elastin Production Alleviates Redness Alleviates Itching Alleviates Discomfort

Science

Molecular hydrogen functions primarily as a selective antioxidant, targeting and neutralizing detrimental reactive oxygen species (ROS), thereby mitigating oxidative damage and stress. It exhibits anti-inflammatory properties by modulating inflammatory pathways and reducing pro-inflammatory cytokines, which helps soothe skin irritation, redness, and discomfort. H2 also actively promotes skin repair and regeneration, activating intrinsic antioxidant enzymes within skin cells and reinforcing the integrity of the skin barrier. Its remarkably small molecular structure facilitates easy penetration through cell membranes to various skin layers. Additionally, it provides a homeostatic regulatory effect on sebum secretion, helping to reduce excess oiliness in oily skin while simultaneously boosting moisture levels in drier complexions, alongside supporting the production of vital collagen and elastin.


Research

High confidence
Effective range 0.3–2.091%
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Molecular hydrogen gas exhibits low solubility in water (approximately 1.57 ppm), posing a challenge for consistent dosing and concentration maintenance in formulations. Alkaline water (e.g., pH 10.38) has been utilized as a successful carrier. Innovative delivery systems like nano-bubble technology, hydrogels, liposomes, and microneedle patches are being actively researched to enhance its solubility, retention, and controlled release in skincare products.


Safety

CIR Status
Not reviewed
Sensitization risk Low

Molecular hydrogen holds GRAS (Generally Recognized As Safe) status from the FDA and is broadly considered safe for topical application. Clinical studies have reported minimal to no adverse reactions. While flammability is a concern for hydrogen gas in high air concentrations (around 4%), this is not relevant for dissolved hydrogen in topical water-based formulations.


Your Skin

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

Our Assessment

Valuable

Hydrogen is a valuable skincare ingredient, demonstrating broad efficacy in addressing oxidative stress, inflammation, and visible signs of aging, while being well-tolerated across all skin types.


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