I use this 3-4 times per day.
Wake up first thing- apply a small amount under each eye. Be gentle- the skin under your eyes is super fragile.
Brush teeth, floss, hop in the shower.
By the time I'm out of the shower, shaved, etc, a lot of the morning dark circles/ puffiness has subsided.
I reapply a small amount before hopping in the car for my morning commute.
When I get home and I have the haggard eyes from looking at a computer screen all day, I hit the eyes one more time with this stuff.
Lastly, just before bed, put a small amount on.
This regimen has revitalized my face ! I no longer get dark circles, and have noticed that the tiny wrinkles under my eyes are repairing/ not worsening. 28-year old guy, never to early to start some preventative maintenance.
Only reason it is not 5 stars: if you apply too much / it dries out, you can have sort of a film/peel situation going on. It's not super noticeable, but I have sometimes rubbed above my cheekbone and gotten the dried product on my fingers. Kind of has the consistency of pencil eraser shavings, and are clear/ light white.
This can give the appearance that your skin is peeling in that area. Checking your reflection in your phone throughout the day solves problem. (Good habit for checking teeth after lunch too).