This is a product that can be attached to a Clarisonic face brush. The product is meant to spin at a fast rate and act like a brush to blend in foundation, primer, concealer, contour, and other liquid products. I found that when using this product, my foundation was quite streaky. So I ended up having to use a beauty blender to fix it, making it sort of pointless for the foundation. I then used a thick cream contour and concealer. This gave the most beautiful, blended out, highlight and contour in my life, and it also made it way more quicker for me to highlight and contour. So I am definitely glad that I bought this at least for the highlight and contour because I cannot understate how nice and natural the contour blended out. I am a bit unhappy that it did not turn out as well for the foundation. I think that the reason for this was that the foundation was a more liquid product and the contour and concealer are more creamy products. So I believe this product would work better for more creamy products.