The rails should be cleaned and polished with a clean dry cloth. Do not use any water or soapy products near them, as this could cause the metals to tarnish or rust.
The lovely patina of your rails and fittings will continue to develop over time and may take up to 2 years of use, to develop their full and final look. As the rails and fittings adapt to their environment and uses, their colour will change with that wear, tear and use. This is referred to as an organic, living surface as it evolves over time.
No two sets of rails, ladders and fittings will ever look the same after this process of time, some may darken and others may lighten. Any initial marks will blend in with new ones until the surface has completely worn in.
These rails, ladders and fittings are produced in a traditional way, similar to the methods used on antique and old rails from the past.
So just remember that your rails, ladder and fittings require cleaning by using a clean dry cloth and occasionally some wax polish spray. Wet cloths and soapy water MUST NOT be used as the surfaces could rust.