One difference between satin paint finish and eggshell paint finish is that satin paint has considerably more sheen, while eggshell has a low-luster sheen. Another difference is that surfaces covered with satin paint are easier to clean than surfaces covered with eggshell paint.
Eggshell is a less glossy paint than satin, with a 10 to 25 percent gloss compared to satin's 25 to 36 percent gloss. Paints are classified into different categories of sheen, and eggshell and satin paint both fall on the flat end of the spectrum.
Satin paint finish leaves a smooth, velvety sheen on walls, although not as shiny as semi-or high-gloss finishes. Satin paints give surfaces much more depth than flat paint and add a subtle warmth that gives walls a slight glow. Surfaces with satin paint are easier to clean than eggshell paints, as it is more durable. This makes it an ideal finish for walls in high-traffic areas, children's rooms, kitchens and bathrooms. However, satin paint doesn't stand up well to heavy scrubbing to try to remove tougher stains.
Eggshell paint finish leaves surfaces with a very slight hint of luster, similar to that of a real eggshell. While it is common for use on walls, it is tougher to clean than walls with satin paint, as it tends to absorb stains. Because of this, eggshell paint finishes are more suitable for moderate-traffic areas. Surfaces with eggshell paint require cleaning with a gentler touch and no scrubbing to avoid ruining the finish.