A benzoin is a resinous substance obtained from the styrax benzoin, a tree of Sumatra, with a fragrant odour and aromatic taste.

If you have actual benzoin, use it as opposed to your tincture of benzoin. Unless you know the strength of your benzoin tincture, you could go from there.

1-3% might be a good start. How about 1.5%.

eg: 98.5% perfumers' alcohol, 1.5% benzoin.

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friars balsum

Benzoin is slightly polar, and water is polar. Therefore, benzoin is slightly soluble in water.