Lasers or peels on thin fragile skin? (Photo)

I am older and have very fragile, finely wrinkled skin. I presently use all the recommended skin creams including tretinoin, Vit C on my skin and have for many years with minimal improvement. A plastic surgeon suggested either Fraxel or CO2. I am worried I will be down to the dermis after such treatment! What is the best modality to use for skin like mine? Thanks