I used to use a matte bronzer by Too Faced, until I finally ran out and had to buy a new bronzer. I borrowed this from a friend and instantly fell in love. This has VERY slight shimmer, just enough to make your skin look healthy, unlike matte bronzer, which can sometimes make your face look dirty if improperly applied. This Tarte bronzer also didn't budge all day -- I don't know about "waterproof," but it didn't smudge or fade throughout the day. It blends well, and it isn't too pigmented so you can build up the color (my past bronzers were always too pigmented, resulting in unintentional heavy-handed initial application.) I definitely recommend this for anyone who has medium skin tones as well, because it isn't too orange or brown. I personally have light-medium skin with yellow undertones, and I love the natural look this bronzer creates! « less
My favourites are @Butter Bronzer and @Amazonian Clay Bronzer they are both buildable, therefore they can act as both natural or more defined!