One of the best and most effective hair serum .this is useful and safe for regular use . I use the after hairwash which is twice a week and at times even when I don’t wash my hair I just wet my hair n use it ..this keeps my hair tangel free n smooth ..best part is this is improving my hair growth also .stopped my hairfall totally ...I use n highly recommend this serum to all those who have hairfall problem .even though it’s onion serum , it does not smell like. ..the fragnance is mild n good.