Get a good history and find out the guests’ concerns. Have they had this for years or is it more recent?

Men need more because they have stronger muscles 15 to 20 for men and 10 to 15 for women. Men generally are not that concerned about brow drop and want to get rid of the wrinkles faster but womnen brow droop is bad. 

Start low, and then have them come back in 2 weeks for more if needed. Always do a minimum of 2 weeks because they can start to have more reloaxation in the second week. -KW 5/28/20