If you Google it you should get plenty showing up.
I've checked what I used last: http://www.sealantsandtoolsdirect.co.uk/surface_treatments/everbuild_406_stabilising_solution_5_litre_stab5_P23370.html?gclid=CLKuruGOkc8CFUMo0wodbtsLpQ
Having reread the blurb I can see it says it's good for inside or out.
If you order through Amazon UK they'll deliver in France:
Same product is on Amazon FR but at incomprehensibly horrendous prices.
I think it's called Fixateur in France, if I've got that right you can get it at Bricodepot
But, as usual with painting products, it's a lot more expensive than the UK version!