pH Adjuster
PRUNUS DOMESTICA WOOD ASH
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Plum wood ash — an alkaline mineral residue from burned plum wood, historically used in soap-making. Caustic and PAH risk make it a cautious inclusion.
Prunus domestica wood ash is the mineral residue left after combustion of plum tree wood. It is dominated by potassium and calcium carbonates and is strongly alkaline when wetted (lye-like behavior). Historically used in soap making and traditional cleansers. EU CosIng lists it without specific restriction, but the material has inherent caustic potential and typically contains trace polycyclic aromatic hydrocarbons (PAHs) from combustion, some of which (e.g. benzo[a]pyrene) are IARC Group 1 carcinogens. Cosmetic use requires careful pH control and purity specifications.
Skin benefits
- Alkaline mineral source
- Traditional cleansing/ash soap use
- Potassium-rich
Known concerns
- Highly alkaline — irritating at >trace use
- PAH contamination risk from combustion
- Variable composition
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.