What extraction method is used to produce the wintersweet flower wax?

The wax is produced by **solvent extraction** of fresh, hand-picked wintersweet blossoms — the classic technique for premium floral concretes and waxes. Petroleum ether (30–60 °C) is used for hot reflux extraction at a flower-to-solvent ratio of 1:10, followed by vacuum concentration below 60 °C, then ethanol dissolution and frozen filtration (-20 to -15 °C) to separate the pure wax. A higher-end alternative, supercritical CO₂ extraction (22–30 MPa, 40–60 °C), can be applied for an even cleaner profile. Yield is naturally low because wintersweet is a rare winter-blooming flower with limited harvest windows. Residual solvent levels are verified per batch and reported in the COA.

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