Oxygen-based bleach comes in quite a few varieties, so it can be confusing. I recently read an article comparing different products, and it seems that the best bleach to choose depends on the type of stain. There are products that specialize in wine stains and mud stains, ones that are strong against egg stains, and so on. Apparently, the effectiveness also differs between powder and liquid types.

Miyoshi Soap's "Living Oxygen-Based Bleach" was ranked first, and it claims to almost remove wine and mud stains even without soaking. It also says that soaking can make the fabric almost completely white. However, it seems weak against foundation stains. Kao's "Wide Haiter PRO" is good at removing wine stains too, but it’s not suitable for egg or foundation stains.

Ultimately, the best bleach depends on which stains you want to remove. If you're mainly dealing with mud stains from kids, a powder might be best. If you have many colored clothes, a liquid might be the right choice. Using them accordingly seems to be the right approach.