H. G. Wells 
The Invisible Man [EPUB ebook] 

The Invisible Man is a science fiction novella and tells the story of Griffin. He’s a scientist who has devoted himself to research into optics and invents a way to change a body’s refractive index to that of air so that it neither absorbs nor reflects light and thus becomes invisible.

He successfully carries out this procedure on himself, but fails in his attempt to reverse it.