Braces are tough. Both in AI and in real life. The goal with this model is to have as little impact on the rest of the character and only add braces. Some others that I've tried end up changing facial details or the age of the character.
Recommended strength: 0.5-0.8 depending on need
Close-up shots work best, but can come out clear especially with upscaling and in-painting.
The color of the bands can be changed with prompting, with silver being the default.