Spray on twice a week.  Easy Peasy! [SEP] The hair growth serum spray arrived in a nice package and the bottle is well made.  The spray bottle is also easy to assemble by twisting the spray top on.  Per the instructions, you use twice a week on dry or wet hair and you spray directly on the scalp.  It was quite easy to use.  The serum has a very nice scented smell.  It makes my hair smell good.  It is not too strong but has a pleasant smell.<br /><br />After giving birth to my three kids, my hair has thinned out dramatically.  It use to be thick and full.  I was excited to try this to get my hair back.  It hasn’t been a full 3 weeks but I have noticed my hair doesn’t fall out as much when I brush in the morning and after a shower.  I spray at night after a shower and noticed my hair had more volume and shine in the morning.  I’m excited to see more results.<br /><br />**The Expiration date printed on the package is 4/2023.  Plenty of time to use.