I have a lot of cast-aluminum deck furniture that is now 13 years old. The SC sun eventually kills the finish. The furniture in the shaded, screened porch has retained its bronze finish, but the finish of pieces in the weather faded to the color and texture of charcoal briquettes. Replacing the furniture would have been thousands of dollars. I knew that painting the furniture would have been pretty easy, but it would not last a long time and would become dull and faded. Every other year, I would end up painting again.
I cleaned the furniture and brushed Everbrite directly over the existing finish. Of course, it did not return the bronze color (Everbrite is clear) but it made the furniture a very attractive, very glossy black. It looks brand new.
The pic I attached shows the first coat on a small table sitting beside a chair that had not been touched. The pic does not really do the product adequate justice. One coat got me about 90% of where I wanted to be. I could have stopped there, but I put two coats on every piece so that I would have a thicker and glossier surface
Things you need to know:
1) the product seems to be a type of plastic that is dissolved in xylene. The xylene keeps the product about the consistency of maple syrup. As the xylene evaporates, the product hardens.
2) Xylene is extremely aromatic. If you don't have a place to work that is covered and well ventilated, this is not the product for you. I recommend natural ventilation as fans will reduce the working time which is already pretty fast. You want the product to have time to self-level to remove brush strokes. Also, as the product dries, there is a time that the finish is very sticky. You don't want fans blowing bugs or debris into the finish.
3) I know that no finish can stand up to continuous sun and weather for years and years. I can't tell you how long the product will last in the long term, but I am 100% sure that it is better than paint, poly, or anything else I could find. I have had it in the SC weather for a couple of months now and it looks just like it did when I applied the finish. The manufacturer says it has UV resistance, so only time will tell.
4) Lastly, a small point. Due to the viscosity, I recommend applying with a brush and letting it self-level. However, it gets very tacky pretty quickly. Spend the money and use only high quality brushes. The stickiness of the drying product will pull the bristles out of lower quality brushes and they will end up embedded in the finish.
Good Luck!

Perfect for our use .. which is on our brass skimmer lids on our pool deck. Keeps them looking new and shining.

I used Everbright to coat a large piece of bare steel art that I keep indoors, just to inhibit rust over time and to damp dust it occasionally without it rusting. There is no perfect transparent coating for bare mild steel since there is no such thing as fully transparent primer, but this is the best perfectly clear coating for steel that I've found so far.

It dried to the touch in about 30 minutes but cured S-L-O-W-L-Y, meaning the off-gas smell was powerful for several days as it fully hardened -- that's actually a good thing for adhesion & durability. In my experience, clear-coats that cure too fast are the first to crack, flake, bubble, or cause condensation rust over time. But unless your projects is small, you better have a garage or some dry place away from your living space to keep it while the coating cures. The smell is that intense.

Two coats carefully applied two hours apart with a brush were all I needed to achieve a rich luster that brought out the depth of the steel. Gorgeous! Definitely worth the price if you're patient and a perfectionist about coating metals.

Waiting for some time in saltwater environment for a full evaluation.

Easy application and it the only thing that worked for copper shroud in restraunt.