EverSmile AlignerFresh Original Clean Foam – Cleaner Compatible w/Invisalign and All Clear Aligners & Retainers – Eliminates Bacteria, Whitens Teeth, Fights Bad Breath – 50ml (1 Pack)

Someone suggested this product in a previous post. I have not personally tried yet but will be purchasing as mine are yellowing too. https://a.co/d/0c1btOaG

https://www.amazon.com/EverSmile-AlignerFresh-Original-Clean-Go/dp/B07BRNCC8W

https://a.co/d/08v8bQsR I liked this foam.

https://a.co/d/0cGo8CzS I use this to also keep my teeth white. I rinse in water, maybe a retainer tablet a couple times a week, and then put this in them morning and night.