Why are unscented after-shave so uncommon, most of after-shave I can find at a reasonable price have that typical cheap cologne smell which is going to wreck any perfume you wear.
But when looking in most shop, most of them still have some fragance in-it and often, so looks like that people shaving their face buy-it
The scent is largely to cover the alcohol smell. Buy nicer aftershave if you don’t like cheap stuff. Even the ‘good’ (expensive) aftershaves have imitation scents available for much less, many of which are great copies.