PK-18 is a muted blush pink that shows up as a sheer flush of color on my cheek. Good for a more natural look.
RD-18 is a pale tomato red with gold shimmers that looks mesmerizing in the pan. I thought I have found my perfect blush, but it goes on a golden orange instead, with more gold than orange. Oh well, it's still pretty, just not what I was hoping it would be.
See my previous T'estimo Color Cheek post.