The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others. Small molecules that are nonpolar (have no charge) can cross the membrane easily through diffusion, but ions (charged molecules) and larger molecules typically cannot.
Remove dead skin from hands and feet. The basic way to exfoliate hands and feet begins with keeping them in warm soapy water for at least 15 minutes. You will notice that your skin has become ultra soft. Now the time begins to exfoliate your hands and feet. Apply the scrub to skin and rub it for 15 minutes.
Before going to bed, mix some liquid soap in a foot tub filled with warm water. Soak your feet in this warm soapy water for about 20 minutes. Use a pumice stone to gently scrub off the loosened dead skin cells. Rinse off your feet with clean water and pat dry with a soft towel.