Any photos that belong to the genre of fashion, beauty and glamour, by their very nature, need many corrections and enhancements. These may be indoor/studio shots or shot outdoor. First off, lighting can’t be always perfect and there will always be lighting adjustments required, be it a studio or outdoor shot. Skin and facial imperfections are a fact of life and need to be treated carefully. Unwanted highlights, reflections need to be treated in a subtle manner, so as not to harm the authenticity of the photo.
And then there is adding glamour quotient. Hair and make-up can be made to look more defined. Props, backgrounds can be added to add substance and context to the photo. Illustrations can be added depending on the requirements.