Using dishwasher detergent to hand-wash dishes is generally not recommended. The formulas are usually concentrated and highly alkaline, which can irritate the skin. Similarly, you should never put liquid dish soap in a dishwasher. It won't work as effectively as proper detergent, and you will likely end up flooding your kitchen floor with water and foam. There are other DIY dishwasher detergent alternatives you can use instead, if you run out.