I have stumbled upon this video earlier this week and having not been happy with the bnb coverage in the latest tsv I thought that I would try it (the blending sponge).
I'm very impressed so far, as it:
1 gave me the best finish ever and bnb actually looks like foundation (over moisturiser)
2 very quick application
3 picks up bnb without making dust so is economical
4 gives very good coverage so conceals blemishes (using the flat end)
5 I used the pointed tip for concealing dark spots on the bridge of the nose - worked a treat
6 used the flat side on the upper lids to even out the tone - excellent
7 used the round side for the tsv blush - much better look than when I used a brush
8 used the lightest highlighter on the upper lids - very good
9 used the darker highlighter on the top of the cheeks -very good
10 gave it the final blending bnb + blush - excellent finish
I used it dry for powder, blusher and highlighters, but for liquid foundation I heard people wet it and squeeze almost dry.
https://www.youtube.com/watch?v=aX8pdaT2HfY
I remember a forum member praised it highly in the past (was it Donna?), it really is an excellent beauty tool.
All you will need with it are the eye make up brushes so it's great on the go as it replacing some of the brushes.
ps I got mine in Superdrug £5.99