This liquid contour blends seamlessly into the skin. It doesn’t have any orange undertones (I find both shades to be cool toned). 20 is definitely lighter while 21 is deeper. It isn’t overly pigmented or hard to blend. It has a sheerness/translucency that looks natural. It doesn’t look cakey or emphasize dryness because the formula is very thin and moisturizing. It’s not a mousse formula, it’s more watery. The applicator size is perfect for nose contouring. This is a handy product for summertime, but I will say it’s quite small (the same size as the lip magnets).