For laundary : To make smaller quantities, take 12-15 soapnuts in 6 cups of water OR in 1 glass of water, boil 8 soapnuts. Let it cool and strain. You can use this liquid for a 6-kg load in the washing machine. The leftover reetha is reboiled and strained successively for two more (lighter) loads
For Hair : Just take around three teaspoons of reetha powder and add water to make a paste. Add a teaspoon of lemon juice to the mix along with two teaspoons of yoghurt. Mix it and apply on the scalp and on the entire length of the hair. Wash it off after 15-20 minutes