ALNUS JAPONICA LEAF/STEM WATER

ALNUS JAPONICA LEAF/STEM WATER.

Valuable CAS - / HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING

ALNUS JAPONICA LEAF/STEM WATER is a soothing and conditioning botanical ingredient derived from the Japanese alder, recognized for its humectant properties. It helps calm the skin while supporting hydration and overall balance.

skin conditioning humectant soothing

Science

Mechanism of Action

Rich in diarylheptanoids such as oregonin, this ingredient acts as a potent antioxidant by scavenging free radicals and enhancing endogenous enzyme activity. It also exhibits anti-inflammatory effects by inhibiting COX-2 and 5-lipoxygenase, alongside suppressing pro-inflammatory cytokine expression.

Research

Clinical Evidence

Low confidence

Effective range N/A

Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility

Water

Optimal pH 4.5 – 7.5

0 7 14

Stability

This water-soluble ingredient should be added to the aqueous or cool-down phase, as its active polyphenols are thermolabile and sensitive to high heat (above 80-100°C) over prolonged periods.

Conflicts

Strong oxidizing agents
High temperature processing

Safety

Safety Profile

CIR Status

Not reviewed

Sensitization risk Low

While not formally reviewed by the CIR as a specific 'leaf/stem water,' related Alnus extracts are traditionally considered safe; however, specific clinical cosmetic safety data is limited.

Your Skin

Skin Compatibility

Yes Normal

Yes Dry

Yes Oily

Yes Sensitive

Irritancy Low

Comedogenicity Low

Our Assessment

Verdict

Valuable

This ingredient offers valuable soothing, conditioning, and antioxidant properties for a range of skin types, though direct human topical efficacy data for the 'water' is still emerging.

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