We slather on moisturizer, dab on makeup and, often begrudgingly, slop on sunscreen. Our skin is our largest organ; something to be protected. But now, a new study from researchers in Illinois reminds us that it’s also our biggest protector.

Although we often think of skin as just a barrier, its innate “stretchiness” transforms it into a defensive structure that can significantly minimize damage from punctures. Specifically, thin, stretchy skin, like that of pigs and humans, outperforms even the best synthetic materials designed to mimic it.

In a series of experiments, researchers tested the puncture resistance of pig skin and underlying tissue against various projectiles. They discovered that the skin’s ability to dissipate energy from sharp objects could considerably reduce damage to the tissues below it. In fact, pig skin reduced puncture damage by up to 73% at high speeds compared with tissue without skin.

That’s right: a mere 2.5 milimeter thick piece of pig skin could outperform synthetic substitutes that were not only thicker, but stiffer.

How? Thanks to the collagen fibers woven into the skin. When these fibers break, they absorb and redistribute the energy of the puncture, preventing deeper tissue damage. Here, synthetic gels fall behind.

So, what does this mean for us? While synthetic materials have their place, they can’t replicate what our largest, even wrinkled or pimply organ does best.

Eventually, it’s possible material scientists someday will be able to better mimic these natural defenses … but if they ever do, will pricking your finger on a rose bush still hurt?