Yes they usually say "Blood Heat" for junkets and stuff like that. I just looked up my book for oily hair and this is what it says:
Shampooing every day can aggravate the problem, as the glands become even more active in responce to the constant stimulation. Dry shampoos are a compromise as they remove the oil between shampoos. Don't brush too hard for too long. Don't use very hot water for shampooing or rinsing, as the heat will encourage the production of more oil. A vinegar rinse will strip the excessive oil and leave the hair shining and manageable.
After Shampoo Rinse
2 cups vinegar
2 teaspoons of mixed or single essential oil (oils for oily hair are Bay laurel, clary sage, cypress, lavendar, lemon, rosemary)
Mix all ingredients together in 500ml bottle. Leave for 4 days to synergise.
Add 1/2 cup of the rinse to 1 litre of warm water. rinse hair, using a bowl to catch - repeat as much as you like or til your arms get tired.