Invisalign aligners are nearly impossible to see when wearing them. This is because they are made out of clear plastic and are perfectly fit to your smile. Your trays will be custom-made to fit your gum line for a more seamless look. Plus there are no metal brackets or wires, so you can feel confident in your smile throughout treatment. However, if you eat or drink with your aligners in, they could become stained, making them more visible.