This is a test of commonsense. Complete the next sentence:

How to clean fake tanner from white sheets
Create a mixture of hot water and biological laundry detergent.
It is best to use a bathtub for this as it is large enough to hold the sheets in and won't overflow. Once the bathtub is filled with hot water, add a small cup of biological washing powder and stir well with a large spoon or stirrer to create the cleaning mixture.
Biological detergent has enzymes in the powder that help clean stains that non-biological detergent does not contain. Place the sheets into the cleaning mixture.