If your wearing very thin tight fabric it might show a little.

Yes this means you either need to wash them daily or order several pairs.

These products are made of a special patented micromassage wave fabric. They generate well-being and favor the reduction of fat cushions.
The special micromassage wave and relief weave exert a delicate skin massage with natural body movements. This massage stimulates subcutaneous microcirculation and lymph drainage and consequently improves the appearance of the skin and the zones suffering from cellulitis. It also improves muscle tone and favors venous reflux.