So, people generally cover their body with protective coating, they call
"clothes", which in addition to creating microclimate, has also come to
serve
aesthetic purposes.
One side effect though, clothes also hide aging features, e.g., you can't tell
her age by looking at the limbs covered
with clothes.
The Stickable Face Scales would be the kind of scales that can move
predictably in
relation to one another, attached to facial feature points, and thus, adapt to
your facial expressions by sliding in relation to one another.
The face scales comes in various colors and sizes, to enable people to
design
their unique kind of faces just by sticking the different arrangements. The
colors and shapes could also be used to identify oneself with domains of
interests or the kind of aliens they liked in sci-fi the movies.