This is original cold-pressed, matured and boiled linseed oil from Sweden. It's what linseed oil paint is made from, so it's the perfect thinner.
This linseed oil has faster drying times than raw linseed oil, however, so if you're painting very dry, porous wood we'd recommend raw linseed oil instead.
Boiled linseed oil can also be used for oiling and surface-treating indoor wood giving a rich, mellow patina to stripped or bare wood.