"Weak"? If anything, I guess you could say it would get "stronger" -- as in, there would be a build-up of internal and external scar tissue. Re-piercing through scar tissue is not safe or smart, and would likely be increasingly painful as you keep re-piercing it. Your body is not a pincushion. You need to take care of it!
they molt, the same as humans do not have the same skin that they were born with
they need to keep there skin moist
No, a skin graft is taking the skin from another area, while artificial skin is well... artificial skin.
Pressure is defined as the force per area P = F/A. Therefore, the pressure will increase if you decrease the area. Think of what happens if you push a hammer against your skin compared to if you push a knife against your skin with the same force. Which one has the smallest area? ;)
Try and avoid shaving over the same area too many times, as each pat strip off skin cells and can cause redundant irritation and razor burns.
Try washing the area with soap and water really well, then dry the area, preferably in front of a fan until the area is dry and then apply baby rash ointment or powder to the area. Keep in mind, the skin needs to stay as clean and dry as possible.
If your talking about human skin, no! Your body is constantly replacing damaged or old cells, so you go through about 1 skin a month. Think about all on the dust in your house. 95% of it is human skin.
to keep the skin hydrated so it doesnt dry out. :) to keep the skin hydrated so it doesnt dry out. :)
Maggots have a shape which is defined by their skin. The total area of the skin is the maggot's surface area.
To keep your skin healthy you have to do some excercise and not eat junk food and to keep your skin clean you have to stay away from the dirt and have shower/bath.
to keep your skin moist
Aniamals have their skin to keep from infection from inside the body,ampbibians breath through their skin and drink through their skin,keep insides in and etc.