First, you need to find or buy a large enough tub in which both of your feet can rest comfortably, and deep enough that your feet can be covered in water.  Put a few drops of mild soap into the tub and fill half way with warm water.  You can also try adding a few drops of your favourite essential oil to the water to add some aromatherapy while you relax.  Sit on a comfortable chair and soak your feet in the water for 10 minutes.  Use a 1/2 cup of epsom salts instead of the soap.  Epsom salts are actually a mineral made with magnesium and sulphate.  Both magnesium and sulphates have excellent health benefits, and both are absorbed quickly through the skin.  This makes an epsom salt soak a great way to get magnesium and sulphate into your body.  Both minerals have benefits such as: increased serotonin production, increased energy, reduced inflammation, foot odour elimination, and improved blood circulation.  Use 1/4 cup of white vinegar instead of the soap.  Vinegar has a lot more benefits than many realize, and many of those benefits are not in the kitchen.  Soaking your feet in a vinegar mixture can help eliminate foot odour, and reduce your chances of getting a foot fungus like athlete's foot.  Vinegar is also acidic, which helps soften the skin, making it easier to remove dead and dry skin after you're finished soaking. Use a pumice stone or foot file to scrub the dead skin and calluses off the bottoms of your feet.  You may need to bend your feet behind you in order to reach all the way around your heals.  Don't forget to check your toes for calluses and dead skin as well.  Remember to wet the pumice stone before using it.  Pumice stones, foot files, emery boards, etc., are all great options to remove dead or dry skin from your feet after you've soaked them.  And while foot razors/shavers are available for purchase at many drug and department stores, they are not recommended by doctors.  Unfortunately it is too easy to cut or nick your feet with a foot razor, which can lead to infections. Use wooden...

TL;DR in Vietnamese:
Ngâm chân. Loại bỏ da chết và chai chân. Chăm sóc biểu bì và móng. Dưỡng ẩm cho bàn chân và mắt cá chân. Sơn móng chân.