Sweet Peach has a light-medium, pinky-peach base with lots of peachy-gold shimmer paired with a metallic finish. It looked almost like a highlighter and blush on me as the apples of my cheeks were brighter, more golden, while closer to the hollow of my cheek appeared darker, pinker.
The loose format makes it a bit harder to assess "one layer," but it seemed quite pigmented to me, though not to such a degree as I had to use hardly any at all (which would make it fussier to use). The powder was finely-milled and blendable but had enough weight to it that it didn't go poof! as soon as I opened the jar and was less prone to flying away from the brush. It had an intense sheen but didn't emphasize my skin's natural texture. This shade lasted nicely for eight and a half hours before fading noticeably.