Linseed oil finish is done with a material that has been produced by pressing flax seeds. It has a sharp and distinctive smell and is different from flax seed oil, which is safe to be ingested by humans. The natural oil is usually painted on wood and other surfaces to make them more resistant to damage. It is also an ingredient that is commonly used on on consumer products such as linoleum, soap, paint and other similar products.
When used as finishing for wood furniture, the oil dries slowly and shrinks minimally as it hardens. It does not cover like varnish does but will soak into the pores of the wood that are both microscopic and visible, allowing for a shiny but not glossy surface. This shows off the grain and true beauty of the wood better. Furniture that has been treated with the substance resists dents more and can easily be repaired when scratched.
The surface that is formed by linseed oil is not as hard as the surface made by modern varnish. If allowed to stay wet, the wood will also absorb moisture slowly. You can protect furniture that is made from soft wood from dents but you will have to make several applications. You would also have to wait longer for it to dry if the wood is harder. Furniture that are designed for the garden that was treated with linseed oil is also susceptible to mildew.