Bollywood's plastic surgery woes

Recently there have been some posts and many comments on Pinkvilla about the alleged plastic surgery and use of botox by some well known Bollywood celebrities. Below are the actors and actresses who are alleged the most to have gone under the knife and/or used botox.The question is, are these natural physical changes that we all go through as we age or are they the results of plastic surgery/botox use?If they are the results of plastic surgery/botox use, then did all of them need to go under the knife/use botox (considering the before and after looks) and can we blame these celebrities for trying to look youthful and have better physical features in an industry that highly favours such traits?