I would pick a carnauba based wax just for the hardness.
Car wax on resin furniture.
An appropriate amount needs to be applied on the chairs and then buffed so no residue remains.
Oxidation commonly occurs on outdoor furniture such as resin plastic chairs and is caused from prolonged exposure to the sun.
So use what ever you have.
It can happen to almost any material that is left in the sun for long periods of time including aluminum fiberglass and even car paint.
Resin on furniture is non pigmented paint.
Patio furniture is always exposed to the elements.
Sunshield should be used regularly or whenever outdoor furniture looks faded or dry.
The great advantage of all of this work is that you have a really nice feeling chair the wax makes it silk like comfortable on bare skin and you can repeat the process for years if you like.
I would stay away from using wax.
This distinctively blended product effectively penetrates and replenishes natural oils.
Another useful and highly effective way to clean resin chairs is by car wax.
Using wax on resin can make a real mess and take a long time to buff out with all the little nooks and crannies.
Sunshield combines uv inhibitors along with a unique blend of carnauba wax beeswax and orange oil to protect the natural beauty and depth of grain in outdoor wood furniture.
It may also make the furniture too slippery and cause someone to slip right out of a chair.
There used to be waxes for resin furniture but if you can t find them use a car wax.
And are you referring to the no silicone on bare wood.
Applying occasional coats of boat or car wax to the chairs will protect them from future oxidation.