"Pumice /ˈpʌmɨs/, called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. It is typically light colored. Scoria is another vesicular volcanic rock that differs from pumice in having larger vesicles and thicker vesicle walls and being dark colored and denser.[1][2]
Pumice is created when super-heated, highly pressurized rock is violently ejected from a volcano. The unusual foamy configuration of pumice happens because of simultaneous rapid cooling and rapid depressurization. The depressurization creates bubbles by lowering the solubility of gases (including water and CO2) that are dissolved in the lava, causing the gases to rapidly exsolve (like the bubbles of CO2 that appear when a carbonated drink is opened). The simultaneous cooling and depressurization freezes the bubbles in the matrix."
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Steps to Properly Use a Pumice Stone
1. The first step to smooth your rough feet is to soften up the skin. The best way to do this is to soak your feet in a pan of warm water that has a few drops of a gentle liquid beauty soap, like Dove, swished around in it. Soak your feet for five to ten minutes, until the skin has softened sufficiently.
If you're going to properly use a pumice stone while you're taking a bath or shower, you can, of course, skip the pan. However, make sure to soak your feet, though, especially if you're showering.
2. The next step is to dip the pumice stone in the soapy water to get it wet.
Note: Before you proceed, keep in mind that smoothing your rough feet or reducing corns and calluses takes time. It's a gradual process that isn't going to happen by using the pumice stone just once. You'll need to use the stone gently. Rub too hard and you can break the skin and cause bleeding. You can also cause cuts and scratches.
If you are Diabetic, or otherwise have circulation problems in your feet, you'll need to pay special attention to how hard you are using the pumice stone. If you have open cracks, sores, or other medical problems with your feet, consult your healthcare professional before you use a pumice stone.
3. Now, take the stone in one hand and rub it lightly in a back-and-forth motion across rough patches, corns and calluses on one foot. Do this for just about thirty seconds or so. You can feel with your hand how much softer your skin is. You'll also notice a difference with corns and calluses. Repeat the process by using the pumice stone on your other foot.
4. Dip your feet into the pan of water and swish them around a bit to rinse the skin cells off.
5. Repeat steps two through four again.
6. Once you're done properly using the pumice stone to smooth your rough feet, wash and rinse your feet well. Then, dry them. Apply a good-quality moisturizer to help soften them even more.
Depending on how rough your feet are, or how many corns and calluses you have, or how big they may be, you should use a pumice stone two to three times a week.
How to Clean a Pumice Stone
Every time after you've used your pumice stone, you need to clean the dead skin cells off it. You can do a fairly good job of this by swishing it in soapy water. Then, rinse it well with clean water.
Periodically, it's a good idea to scrub it lightly with a stiff brush and soapy water; rinse well.
The best place to store a pumice stone is in a place where it can get plenty of air and dry out. I store mine on my shower rack. It drip-dries there nicely.
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