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Soap is an alkali metal salt from fatty acids. Soap serves to emulsify impurities in the form of oil or other impurities. Commercial soap that is used by the community can cause pollution to the environment caused by soap raw materials that are difficult to degrade. Also, consumers who have sensitive skin can irritate. One solution that can be done to minimize the effects is by using natural ingredients.Lerak fruit (Sapindus rarak DC) is one of the natural ingredients that can be used as an alternative in soap raw materials. Lerak fruit (S. rarak) contains several secondary metabolites. The most dominant secondary metabolite is saponin. These saponins act as raw material for making soap. The purpose of this study is the use of natural materials, especially Lerak fruit as raw material for soap making. Tests conducted on soap are foam test, soap quality with experiments on several stains and organoleptic soap tests. The results obtained Lerak fruit can be used as raw materials for soap. The foam test results on the soap found that the soap foaming durability was longer. The results of soap quality testing on several stains namely charcoal stains, soy sauce stains and sauces prove the soap can clean stains well. The organoleptic results get a distinctive aroma, odor, and average of density are 1.01. Keyword : Lerak, soap

The Gel Soap with Raw Materials of Lerak Fruit (Sapindus rarak DC)