Makeup Geek Moon Phase Highlighter ($20.00 for 0.25 oz.) is a very light, iridescent white that had shimmer that shifted from a bluish aqua to an icy lavender. The shift was strong enough to be noticeable on the skin, but it was more apparent when I wasn't looking...

Makeup Geek Luster Highlighter ($20.00 for 0.25 oz.) is a light, rosy copper with warm undertones and a metallic sheen. There was a lot of shimmer and a very reflective finish, so the color appeared lighter swatched and applied to the skin than it did in the pan. This type...