I use soap bars in my home to do dishes, wash my hands and body, as well as wash my hair (using shampoo bars). I have never liked liquid soap, as I find it extremely wasteful. Even though I can buy liquid soap in bulk, using my own containers, the production and transportation of liquid soap, which is heavy and full of water, is not what I consider to be a sustainable option.
When the soap bars reduce to a small end, which becomes hard to handle, rather than throw away the ends, I repurpose them. In the past, I have melted ends to make a new soap bar, but this can be a messy process. My preference now is to simply grate the soap ends into a tin, then throw a small handful in my dish washing tub to wash dishes. I used to boil the soap ends to make a liquid soap, but I found this to be time consuming, and I often ended up with a solid, gel-like substance. This newer method is much faster.
Since I don’t always have enough grated soap on hand, I generally use a 1kg bar of solid Savon de Marseille to do the dishes – I simply rub a wooden dish brush along the surface of the soap and clean the dishes. When I use the grated soap, I skip this step. This is an easy way to make sure that none of your bar soaps end up in the landfill.