Im trying to find a way of painting on retouching varnish over a painting (waterbased W&N oil paints) to bring back the lustre for my husbands paintings. Each time he varnishes, the brush, even though we clean it and try to keep it dust free, as soon he paints the varnish on it always picks up or attracts dust in the varnish. Not too bad if its on a coloured area but a blue sky or plain light background isn't very helpful. Then to get the little bits of dust out can be tricky.
Does anyone here use retouching varnish and if so how do you do it and do you have any issues?
Thank you in advance
PS I have just realised in me choosing technical support (thinking...well this is technical!!) I think im in the wrong category!! Sorry!