Yes, hand-washed items typically require less soap than regular items in a top-loading washer. The main reason for this is that handwashing allows for more direct control over the amount of soap used and how it is applied to the clothing.
When handwashing, you can easily see and feel the amount of soap you're using and apply it directly to the areas that need cleaning. This targeted application helps prevent over-soaping and ensures that the soap is used efficiently, especially for spot cleaning specific stains.
On the other hand, in a top-loading washer, the water level, soap distribution, and agitation are more standardized. It can be challenging to gauge the exact amount of soap required for each load, and if you use too much soap, it may not rinse out completely, leaving residues on the clothing. Additionally, too much soap in a top-loading washer can create excess suds, which may reduce the machine's cleaning efficiency and potentially cause overflows.
When using a top-loading washer, it's generally recommended to follow the manufacturer's guidelines for detergent usage, which are usually based on load size and soil level. Using the appropriate amount of detergent will help ensure that your clothes come out clean without excess soap residues.
Remember that some items, especially delicate fabrics, may be labeled as "hand wash only" to protect them from potential damage in a machine washer. In such cases, handwashing with a gentle detergent specifically designed for delicate fabrics is the best approach.