Instagram will restrict posts and ads about weight loss and cosmetic surgery to try and protect teen users

Instagram is tightening up its rules around influencers touting weight-loss products and cosmetic surgery.

Instagram made the announcement on Wednesday in partnership with "The Good Place" actress Jameela Jamil, who launched her "I Weigh" body positivity campaign last year.

Under the new rules Instagram will:

Restrict any posts promoting weight-loss products or cosmetic procedures with an "incentive to buy" or a price attached so that under-18s can't see them.

Remove any content that makes a "miraculous claim about certain diet or weight loss products" and comes with a commercial offer such as a discount code.

"This is a huge win for our ongoing fight against the diet/detox industry," Jamil said in a statement. She said she had worked with Instagam alongside "a host of other experts" to help formulate the policy.