If you want to achieve satisfactory results, it is important to perform a small test before staining or oiling your beautiful solid oak bookshelf or any other wooden surface of your choice.
First, make sure to vigorously shake your product so that the color pigments at the bottom of the container are well mixed with the rest of the contents.
Then, test on a small piece of the same wood essence as your project, as the result may vary depending on the type of wood and sanding you have done. When you are satisfied with the result, you can continue with your project with confidence.