HAY WATER
Other
Moderate
CAS Number: 100209-32-3
About HAY WATER
An aromatic water from hay distillation used as a fragrance component, containing volatile compounds including coumarin with sensitisation concerns.
Detailed Analysis
Hay Water is an aqueous solution containing volatile oils obtained by the distillation of hay (various grass species). The composition includes coumarin, phytol, furan derivatives, and various aldehydes. Coumarin is listed in EU Annex III as a fragrance allergen requiring declaration when present above 0.001% in leave-on products. The IFRA standard restricts coumarin in fragrance compounds. Natural hay water composition varies with source grass species and growing conditions, creating variability in allergen content.
What It Does
Skin Benefits
- ✓ Provides natural hay/herbal fragrance
- ✓ Traditional use in perfumery
- ✓ Contains some aromatic volatile compounds
Known Concerns
- ⚠ Contains coumarin, a listed EU fragrance allergen requiring declaration
- ⚠ Variable natural composition
- ⚠ Potential for photosensitisation from furanocoumarins if present
- ⚠ May contain other fragrance sensitisers
Safety Score
Moderate
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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