It's sometimes difficult to believe how concentrated some of these products are. With NA I usually use 2 drops lately hoping to go for more clear effects. And while it does seem to work well overall, I don't see as much beautification type effects/responses that I used to see when using just a couple swipes on the jawline a year or more ago. Lately I again started trying just a couple swipes from a roller bottle of NA+A1 mix, applied to finger tip then swiped on the jawline. And suddenly I am noticing the double takes, staring, attraction from younger women etc. that were so prevalent during my initial testing. I need to start doing this more. Surprisingly even this dose seems to last all day (I work in an air-conditioned environment) and the effects are apparent even after the gym (before I shower). With 2 drops it does seem to work fine when you are interacting or spending one-on-one time with someone for a while because NA does have a deep bonding feeling that's und