no, skin only darkens when exposed to UV rays, so when it is dark outside, and you are not exposed to the sun, your skin will thus not darken.
Yes It does, Hard water contains loads of minerals as compared to soft water, Those minerals start piling up on your skin and hair, which makes skin darker and hair rigid.
No it doesn't
if you mean without tanning or false tanning, there is no other way to darken your skin
Yes Salt can dry out your skin...or at least Salt Water can like the Ocean
yes?
UV rays transfer energy into the dead particles into your hair, lightening it, and since your skin isn't dead, it will darken it.
No, it is not harmful.
Because seawater has salt in it and salt is hygroscopic and will dehydrate skin.
No
It is not recommended; after drying salt remain on the skin.
It's because the salt from the water stays on your skin, and the sun drys it out. So if you need to use lotion.
Your skin gets wet and salty
The water inside of the body is saltier than salt water, so wrinkles do not form. Wrinkles form when skin is in water because of the evaporation of water out of the skin after being immersed.
No. A sauna is (in simple terms) a steam bath. In order for your skin to darken, the melanin in your body needs to react with ultra-violet light.