100 grams of shaved or grated coconut or Ivory soap
1 egg yolk
1 tbsp. glycerine or olive oil if hair is dry
1/2 qt. boiling water
1 tbsp. alcohol or cologne if hair is oily

Pour boiling water over shaved soap and let set until it is dissolved or melted. Beat the egg yolks with the other ingredients and mix well. Keep in closed bottle. Soap scraps from hand soap could also be used.