Dermis is one of the skin layer and it is the thickest part.
It is located between epidermis and subcutaneous layer.
The thinnest one is 0.6 mm in the upper eyelid and the thickest one is about 3 mm in the palm, sole, and back.
For rhinoplasty purpose, dermis is harvested from the hip, which has the thickest layer.
After round-shape skin excision, epidermis and subcutaneous tissue are removed to obtain dermis (below photos).
Dermis is commonly used to do cover the tip grafts to prevent showing.
It is also used to camouflage damaged skin after failed rhinoplasty.
Some surgeons use it to augment the nasal bridge after silicone removal.
Augmenting the nasal bridge with dermis has two potential disadvantages.
If the dermis graft is infected, there is a high possibility of concomitant skin damage, so absolute sterile technique is important.
Resorption occurs slowly, so although it may look OK after a year, the dorsal volume could decrease dramatically after 2-3 years.
Resorption of the dermis can be minimized or prevented by using dermis and cartilage together.
Dermis acts as soft tissue camouflaging material on top and cartilage acts as volume filler underneath.
By combination, can make the resorption rate lower.