LED Light Therapy + Home Q&A

I have plates and screws in my cheeks/chin Can I use home devices like Tria Age-Defying Laser/Silkn FaceFX or red light therapy device/ or nuface device? Will they affect those plates in my face?

I am looking into buying an at home LED treatment mask. I have heard of these at-home masks you can buy and leave on for 20 minutes with Blue, Green and Red LED lights. I really enjoyed the results I had from my first treatment with a doctor and I would like to do them more regularly. I have recently been scaring really badly with acne and am not sure if it is due to changing skin as I get older. (I am only 22)

I'm really wanna purchase a at home LED light mask. But there are so many different brands out there. Is there a specific type of LED ? Or all the LED lights are same. I'm confused. Please help me

What are your thoughts about its effectiveness for improving dark spots from sun damage and fine lines on the face and neck for someone under 50?

Was wondering what doctor's opinions are about at home LED light therapy masks are and if they're safe? How often should they be used and are they safe following a face lift. Thanks!