I don't know anything about false eyelash strips, but they have these types of false eyelashes applied individually, which are actually groups of two or three eyelashes. They stand between real eyelashes to help fill them in. You can apply them yourself or do it professionally. I had them inserted for a wedding.
They're supposed to last at least a week, maybe longer, if you don't rub your eyes. When it comes to glue, patience is key. Apply a thin, even layer to your false eyelashes and WAIT for the glue to dry before you even think about applying them to the lash line. When the glue is sticky, this helps false eyelashes stick to the right place for a longer period of time.
Applying false eyelashes can easily make or break your big night out, and you know we speak from experience when we say it. We've all been there, previous drinks flow (along with the contents of your closet, as you struggle to find an outfit that doesn't exude the Miranda vibe of Lizzie McGuire) and then, to make matters worse, your bare eyelash refuses to hold on. This is because if you fold a section of your eyelashes on the outside it doesn't matter, since the cutouts are more than likely to fit your eyes anyway. If you want a very durable application, use the “double adhesive” technique by applying a few dots of glue along the lash line and on the eyelashes.
Attach your eyelash band with a small amount of glue to the inner and outer corners of the band. Sometimes, eyelashes can flatten out when you take them out of the box and therefore appear in the inner or outer corners once applied. Try to balance your upper lashes as well with strappy lashes at the bottom, which will give the illusion of rolling back your eyes, like Defined Underlash by Sweed x Nikki Wolff. Well, unfortunately false eyelashes aren't one size fits all, you can't just walk out the door, stick some glue in your bag and hope for the best.
I never spent more time than that, because my eyelashes would be less secure after the second day and I felt a little disgusting not to wash my face 100%. If you want to create more enhancement with your lashes, finish by pressing gently against the lashes at the edge of the inner lash line. There's less than one eyeball (with a gap between them), you tend to have your eyes closed, so you might want to create the illusion of separating them with longer eyelashes in the outer corners. For starters, using mascara allows you to pinch and bring your natural eyelashes and false eyelashes together so that they set well.
Place a mirror under you to make it easier to see the lash line and place them as close to the lash line as possible.