Looks like something you'd wear. Make sure it's properly washed. Yer don't want worms on yer face.
Knowing me, it wouldn't last long. My face would be making salad out of it.
Functionality : 1/10
How likely is it to attract a good looking dude : 2/10
Color : 4/10
Ease of acquisition : 8/10
Probability of being laughed at : 8/10
Probability of making people smile : 9/10
Feeds me : 10/10
Having veins and a corpus spongiosum like a cock : 100/10
Durability: 1/10
Longevity of leaf integrity will depend on numerous environmental factors, more than likely will wilt within a short space of time. Also, the rubber band will quickly crush and cut through the leaf's cells causing the "mask" to simply drop from your face.
Estimated "functional" use of the mask: 1 hour
*please note the sarcastic use of the term "functional"*
Effectiveness: -2/10
Not only is there zero actual filtration occurring with this mask, but you run the risk of attracting other vectors; flies, birds, starving vegetarians, etc.
Style points: -100/10
This is the apocalypse man! Ain't nobody wanna be out here surviving wearing no damn lettuce leaf on their face haha