Beauty pageants and botox

Came across this trailer for a documentary - The World Before Her. I knew that beauty contests and botox are best buddies, but something about this so called “Doctor” forcing her scary ideas of beauty on young girls is just so unnerving! Take a look -

The World Before Her: Manufacturing Beauty - YouTube

The documentary is on netflix, planning to watch it.

Where do you draw the line between necessary and unnecessary cosmetic enhancement?