Skin is one of most most sensitive part of our body and When we talk about our chicks or hands which comes directly contact with the the sun rays during summer. And Sun rays effects our skin the upper layer affected much more and some times we feel sunburns..
And then we need to use such lotions to save our body.
And thanks @adsactly for sharing A to Z knowledge about and Sun rays and Sunscreens.
The countries like Caribbean country, South Asian Counties, African countries faced much more Sunscreen problem during Summer when Sun is on peak of heads.