Many salts, including soduim chloride, are
hydroscopic. That means that they will capture moisture out of the air
as long as the relative humidity is above some minimum value (for that
particular salt) and remain damp, instead of drying out completely. A
semipermeable membrane (like skin) will develop a fluid pressure in
the direction of diluting a higher salt content (osmosis). So if the
salt concentration on the outside your skin in higher than the
concentration on the inside, some water will be pumped from inside to
outside (in the direction that it is always moving unless you are
submerged in fresh water, in which case, your skin pumps water into
your blood stream). And this water will also add to your skin
moisture, until it evaporates.
By the way, swimming (vigorous activity under water
for extended periods) in any water, fresh or salt, "dries" your skin
by emulsifying the surface oil and floating it away. This is the same
way that excessive scrubbing "dries" your skin.
|
|
|
Quick links On Beauty
Tips |
Providing Dental Beauty is a Tough Skill to
Master
Is Teeth Whitening Really Safe To Have Done?
Salt Water - A Dry Skin Remedy?
Make Small Eyes Look Great With These Makeup Tips
Lasik Surgery Upstate New York
New Updo Hairstyles for You
Celebrity Hairstyle Secrets - How You Can Look Like the
Stars
Getting Healthy and Glowing Skin for Men
Short Hairstyles Have a Long History in Fashion - Try
One!
Are There Herbs for Cellulite?
|