These are sometimes medicated oils, using olive oil as the basis. More frequently the following Tincture of Soap is used: -

Take of

Soft Soap .....

6 ounces;

Proof Spirit ....

24 fluid ounces.

Dissolve by means of a gentle heat, and strain.

Tinctures can be mixed with this in the proportion of 1 fluid drachm to 9 fluid drachms, and will form very convenient liniments or embrocations.