Dandruff
Put one ounce of quassia chips into a cupful of water ; let it stand for twenty-four hours, and apply to the head, brushing it well into the roots.
Source: Recipes for the Million
Scurf in the Head
Into a pint of water drop a lump of fresh quicklime, the size of a walnut; let it stand all night, then pour the water off clear from the sediment or deposit, add a quarter of a pint of the best vinegar, and wash the head with the mixture, which is perfectly harmless, and forms a simple and effective remedy.
Source: Enquire Within Upon Everything.