I appreciate that there is no classic right or wrong about this, but I have a series of models to work on.
To remove the background colour and, inevitably, a lot of stray hairs (see example).
My basic approach is to use "Quick Selection" which covers around 90%;
then I tidy in "Refine Edges"; but I am still finding that even this does not solve the stray straggly hairs (particularly towards the bottom of the picture)
Much as I love Refine edge, and it is true to say it completely changed my workflow and how quickly I could work, when introduced, but I never found it a particularly intuitive tool to use. But the example you have showed should be a near perfect example of where Refine Edge works perfectly. Even the tiny size you uploaded makes a near perfect mask. Refine Edge is also pretty good at letting you know how best to output the results, and a new layer with layer mask is usually the answer for your example, because you can further refine the mask when you have the selection in its new location.
About the only tip I can give is to start with a big radius value, turn on Smart radius, and drop the radius back until the hard edges lose any feathering. Then paint over the stray hairs. Which is exactly what you have been doing no doubt.
Looking at the example in #1 there is an area of BG colour inset of the hair towards the top of the frame. You should definitely be able to paint over that to make it transparent. Another tip is to toggle Show Radius (j) which not only shows you the extent of where the mask is looking at, but also lets you remove excess with the Alt (Opt) keys.
Thanks very much to everyone. The example I posted was only one of many pictures I have to work on.
Some useful tips there though.
I have a bit of time on this, so – can to an extent – experiment a bit to see what works best for me.
Adding a tutorial that may be a little easier to follow.