High poly to Low poly Texture Baking - wrong pixels (texture map) I am working to retopologize 3D scans into low poly models these days. 

And now I could get the texture map and normal map automatically by using 

blender and Instant Meshes. But my texture map looks weird (especially fingers and armpits) and I can't come up with the solution. 

I used smart uv project (angle limit : 66, Island margin =0) 

and one material with two textures (for normal and texture baking)

This is what I've done : increasing pixels of images of texture map, increasing vertices of low poly, making low poly smooth ..etc 

Any ideas??
First make sure that your UV's have a bit of an Island margin, then place the low poly model on top of your high poly, give it a subdivision surface modifier, make it something high to closely match the high poly model but do not apply the modifier, then give it a shrinkwrap modifier to wrap it around the high poly but do not apply the modifier, than select the high poly model and the low poly after then bake.