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Mix the yolk of one egg with one ounce of spirits of rosemary, a pint of warm water and a pinch of borax. Massage well into scalp just before shampooing.
For persistent dandruff, mix one ounce of sesquicarbonate of ammonia, half pint of spirits of rosemary and one and a half pints of rosewater. Normally, all the three ingredients should be available at a good chemist shop). Apply with absorbent cotton to the scalp, parting the hair. Then brush.