How can you separate a mixture of shampoo and sand?

To separate a mixture of shampoo and sand, you can use filtration. First, add water to the mixture to dissolve the shampoo, creating a liquid solution. Then, pour the mixture through a filter paper or a fine mesh sieve; the sand will be trapped on the filter, while the shampoo solution will pass through. After filtration, you can evaporate the water from the shampoo solution to recover the shampoo.