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As the largest organ and the one that helps us survive, how is the skin made up?
Weighing about 4kg and covering an area of up to 2 square meters, the skin is the largest organ on the human body.
These images will make you think again before you want to go tattooing
When social prejudice has been removed, owning a tattoo today is an ordinary thing.
10 interesting things about human skin
Skin is a very important part of the human body. You may not see that your skin is working, but it actually does a lot of important functions in protecting human life.
Revealed 'unbelievable' about why tattoo ink exists permanently on human skin
Why can't tattoo ink be deleted? The answer will surprise you.
Video: Body reaction makes tattoo permanent
Tattoos are a form of permanent marking with ink that changes skin pigmentation to beautify, create an impression or other causes.