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BETULA PLATYPHYLLA JAPONICA LEAF WATER.

Valuable CAS 223748-09-2 (generic) / FRAGRANCE, SKIN CONDITIONING - MISCELLANEOUS

A nutrient-dense botanical distillate derived from Japanese White Birch leaves, utilized as a therapeutic alternative to plain water in high-performance formulations. It delivers a concentrated bio-load of minerals and electrolytes to the skin's upper layers, facilitating rapid hydration recovery.

Humectant Skin Conditioning Agent Anti-inflammatory Solvent

Science

This ingredient functions as a bio-mimetic hydrator by supplying amino acids, sugars (fructose and glucose), and minerals like magnesium and calcium that closely replicate the skin's Natural Moisturizing Factor (NMF). Furthermore, its trace phenolic compounds and flavonoids provide secondary anti-inflammatory benefits, reducing cutaneous blood perfusion and calming reactive skin states.


Research

High confidence
Effective range 10–100%
Optimal

70%

Key findings

  1. 01 Clinical trials involving birch-derived liquids at 70% concentration demonstrated significant reinforcement of the skin barrier and moisture-boosting efficacy in dehydrated subjects.
  2. 02 PubMed research (ID: 36961534) indicates that birch-based topical applications significantly reduce transepidermal water loss (TEWL) and redness while increasing stratum corneum hydration.

Transparency

Not commonly dusted
Min. effective
10%
Red flag below
1%

Because it often serves as the formula base (solvent), it is typically used at high percentages; however, marketing claims based on 'birch water' where it appears at the bottom of the INCI list (<1%) may be considered 'label dusting' as it lacks solvent impact at that level.


The Formula

Solubility
Water
Optimal pH 4.5 – 6.5
0 7 14

Stability

Highly stable within standard physiological pH ranges, though its organic nutrient profile makes it highly susceptible to microbial growth, necessitating a robust preservative system.

Synergies

  • Glycerin
  • Hyaluronic Acid
  • Panthenol

Safety

CIR Status
Not reviewed
Max tested
100%
Pregnancy
Safe
Sensitization risk Low

Generally recognized as safe; however, individuals with a known allergy to birch pollen (Oral Allergy Syndrome) should perform a patch test prior to widespread application.


Your Skin

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

Our Assessment

Valuable

An excellent nutrient-rich replacement for deionized water that provides measurable improvements in barrier function and redness reduction.


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