An already tanned skin protects against the bad influence of the sun, so you have to expose (children's) skin to this. True? Or not true?
It is sometimes said that a tanned skin is thicker, and therefore protects better against the sun. Like a kind of natural shield that your body makes to protect you.
It is also sometimes claimed that a tanned skin is a sign of health.
Both are not entirely true, and to prevent skin cancer, complete protection of the skin is very important.
Tanning the skin is a protective response against DNA damage. If your skin has tanned due to the sun, there has always been damage to cells or DNA. A tanned skin is therefore in fact skin damaged by the sun. Too much damage can cause skin cancer. A 'healthy tan' is therefore not always really healthy - at least for the skin itself.
A protective reaction does take place, UV light also causes the epidermis to become thicker and browner, so that it becomes more resistant to UV radiation. Pigment-forming cells make melanin, which surrounds the nuclei of skin cells and absorbs the energy of UV radiation before it can damage DNA. And other cells in the epidermis divide faster, so that it thickens and protects the underlying dermis from aging UV-A radiation.
But this accustomed skin does not fully protect. That is why it is recommended to always use sunscreen even on tanned skin. And precisely because it is difficult to fully follow all the rules for correct lubrication, and yet it is also quite a hassle, that lubrication, I recommend protective clothing. And also clothing that covers as completely as possible, to ensure that you are optimally protected against the sun.
Put on your sunwear and Play!