So because of the customs charges, I thought I'd show you a very similar brush. This is the Deluxe Crease brush from the Crown Brush Syntho range. A tiny bit bigger bristles, but very very similar in fluffiness and size, only with a shorter handle.
I use this for more precise work and for smudging liner etc. Sometimes for blending out small areas of concealer.
For cleaning my brushes, I am currently using Parian Spirit to spot clean, which I've been googling like crazy to check it's cruelty free and finding nothing (I've had it ages and have only just used up my pre-china supply of MAC's brush cleanser, so I've gone back to this - I'll update this when I find out!)
And because I'm too cheap to pay £25 or whatever for the Sigma brush cleaning mitt, I bought this one instead. It's basically a silicone oven mitt that I got off ebay for about a fiver and it works a treat, for a fraction of the price of the Sigma one! Win.