No, Saniderm and SecondSkin are not the same. While they are both bandages that can be used on tattoos, they serve different purposes.
Saniderm is a transparent tattoo bandage that is applied over the tattooed area. It acts as a barrier to protect the tattoo from bacteria and other contaminants. It also helps to keep the tattoo moist so it heals properly.
SecondSkin is a thicker, opaque bandage that is used to cover larger areas of the body. It can be used on any part of the body, but it is often used on burns or wounds. SecondSkin helps to prevent infection and keeps the area covered protected from outside elements.