Kat Von D Lock-It Edge Concealer Brush ($24.00) is supposed to blend out under eye concealer and help apply concealer onto blemishes. It is a medium-sized under eye/concealer brush that is dense and thicker than the average brush, and it has a triangular taper on the wider edge, which is what enables it to fit well underneath the eye and along the edge of the nose (by the eye area). The edge is a few millimeters in width, and this is the best aspect of the brush, I think, as it manages blending and diffusing of the under eye concealer up to the lash line without streaking over any eyeliner, as you can get a very soft, gradual edge that meets the eyeliner instead (for those who apply their eye makeup first).
The brush head is 14.50mm in width, 15.00mm in length, and 8.50 mm in thickness. The brush had a total length of 7.00 inches / 18.00 centimeters. It is made out of synthetic bristles and has a glossy black, acrylic handle with a thick ferrule that tapers to a fine point at the end and carries more weight toward the brush head. I find the composition of the Lock-It brushes to have an uneven weight distribution, but it is only noticeable during application with the larger brushes and less so with this one. The greater density makes it harder to clean than some brushes, but it doesn’t take much time nor does it take an extraordinarily long time to dry. The bristles are silky, smooth, and never feel rough or harsh in any direction. It worked well for evenly distributing and spreading out under eye concealer (both liquids and creams) without causing the concealer to become streaky, but it did seem to soak up a fair amount of product and would need to be cleaned each use, if used as an applicator as well as blending tool. I tended to favor it more for blending out concealer, which I tend to dab and spread with whatever brush I’ve used for liquid foundation, to get the concealer closer to the lash line and diffuse it softly along the edges so there are no obvious lines.
Kat Von D Lock-It Edge Foundation Brush ($34.00) is meant for applying and blending liquid and cream foundations while getting into the contours of the face. It’s a medium-large-sized liquid foundation brush that is rectangular in overall shape with edges that flare outwards from the ferrule. What makes it a more interesting brush shape is that the wider side of the brush comes out and then has a triangular wedge or dent that goes in and gives it a more pyramid-like shape. It is similar to the Concealer brush, but the indentation and shape are more noticeable and distinct in the foundation brush.
The brush head is 35.00mm in width, 26.00mm in length, and 21.00mm in thickness. The brush had a total length of 7.50 inches / 19.00 centimeters. The brush uses synthetic fibers and a glossy black, acrylic handle that has significant weighting toward the ferrule and brush head, so it feels top-heavy in my hand compared to the average brush (this is one of the few things I wasn’t keen on). It is a dense brush, which I tended to double-cleanse to bring it back the white bristles, but the drying time seemed average. The fibers felt soft, smooth, and silky against the skin, and it could be used in all directions, but it is a brush that is best suited for those who apply their foundation in downward, outward, or upward strokes, rather than in circular or buffing motions. It does a good job of spreading foundation and evening out liquid and cream formulas.