What is the solubility profile of this tea tree oil — which carriers, solvents and bases does it dissolve in?
Tea tree oil is a typical terpene-rich essential oil: fully miscible with carrier oils and ethanol, and essentially insoluble in water. This shapes how it is formulated in skincare, cleaning and oral-care products.
Solubility Profile
| Solvent / base | Solubility |
|---|---|
| Ethanol | Fully miscible (e.g. 1:1 and higher in 90% ethanol) |
| Carrier oils (jojoba, sweet almond, coconut, MCT) | Fully miscible |
| Vegetable / fixed oils | Fully miscible |
| Water | Insoluble |
| Glycerin / propylene glycol | Poorly soluble; needs solubilizer for aqueous systems |
| Surfactant systems (polysorbate 20/80, PEG) | Emulsifiable for washes, cleansers, mouthwashes |
- In skincare, blend into a carrier oil or cream base at the recommended dilution (see usage-rate FAQ)
- For water-based products (mouthwash, cleansers, sprays), always pre-dissolve with a solubilizer or emulsifier
- In cleaning products, it disperses well in surfactant bases — ideal for natural disinfectant formulas
- For toothpaste/mouthwash, use a food-safe solubilizer and confirm usage with a formulator
- Solubility in ethanol is checked on every COA as an identity parameter
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