Evaluating oils for aerosol room spray comes down to three checks: manufacturer paperwork, scent purity, and solubility. Start by requesting an IFRA certificate from each supplier. Then mix a small batch using a typical 2% fragrance oil, 2% Polysorbate 20, and water. Watch how the oil behaves in this simple room spray recipe. Does it blend clear, or does it separate? A clean result tells you the f...
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