On platforms like amazon, product pictures are an important factor for the sales succcess of your offers. So, in the first place, they are meant to stimulate customers' interests. Though, additionally, amazon itself has specific guidelines and standards that each of your uploaded images has to meet.
Clipping of Hair
Whenever hair or other tricky elements of an image shall be clipped, it makes sense to use the technique of soft-masking. Soft-masking makes it possible to capture the contours of detailed and challenging objects precisely, so they can be cut out and transferred into other contexts without losing their richness of detail.