Why do fingers wrinkle in the bath?

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It's kind of weird, but it happens to almost everyone. We take a long, relaxing bath. After a couple of minutes our hands start to look different and we can notice some changes. First, some small wrinkles start to appear on our finger pads and later on you can tell that they are on the whole palm. It shouldn't be a surprise for anyone that they remain for some time, but there's no reason to be worried about it. But why does it happen? And what is more curious, is there any purpose of this change?

Even if that's quite funny, and maybe for some of you a little bit disgusting, from the scientific point of view there may be a purpose of the wrinkles that we can see on our fingers. The biologists claimed that it could be one of the evolutionary traits that help us adapt to the wet conditions. Just think about trying to grab a shampoo with wet hands while having a bath. Much easier if you have those wrinkles, don't you think?

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