An important property of a soap made by cold process is its durability in use. A good handmade soap formulated with a suitable balance of oils can be used for a long time, much more than an industrialized soap. Soaps spending fast, softens in contact with water, that are slimy, has not good acceptance. The main component which provides hardness and durability is palm oil (palmitic acid) and a lesser degree, coconut oil (lauric acid), which are so-called hard oils.

This lavender soap lasted 20 days with an average of three daily baths, used by two people. Remained full until the end, placed in a soap dish with good water drainage. In its formulation has the following composition: olive / castor oil / babassu / palm – 30/5/30/35 and superfatting of 5%.