Fevipiprant is a potent pgd2 antagonist which has been very successful in treating asthma patients ,unlike setipiprant,amd in undergoing fase 3 at the moment,they dont mention anything about hair though but it has def been better than seti thats why they are completing the last trial
https://www.theguardian.com/society/2016/aug/06/fevipiprant-asthma-drug-trial-treatment
https://www.theguardian.com/society/2016/aug/06/fevipiprant-asthma-drug-trial-treatment