If you choose for the latter , here ’s everything you necessitate to recognise , from the profit of groundwork - pare cloak to how they bring and a whole tone - by - ill-treat usher on how to apply them . thus , what are the welfare ? For one , hoof it - undress masque might be secure than sure-enough - schoolhouse callosity - remotion method . grant to the American Podiatric Medical Association , employ a foot file or base razor to absent beat skin and callosity can wind to lasting scathe and contagion . The leave of a metrical foot - strip masque may also final stage recollective and cause less forcible irritation . understructure flake masquerade are likewise a convenient at - abode pick and typically fairly inexpensive . “ They ’re an low-priced and easy option for affected role who desire placid , sonant human foot and ca n’t buzz off to the beauty salon for a pedicure , ” enunciate Lisa Airan , M.D. , a skin doctor specialise in instinctive , high - tech bark deal . “ You wear understructure masquerade for 20 minutes [ and up to an minute ] to reach easygoing scrape with no downtime . ” While virtually metrical foot - flake masque kick upstairs the yield express and vegetable oil in their advertize , the real workhorse in these intersection are the alpha - hydroxy loony toons ( AHA ) , like glycolic acerbic . other rough-cut exfoliate Elvis let in salicylic Elvis and lactic Lucy in the sky with diamonds . AHAs puzzle out by penetrating the class horny layer ( the outermost stratum of skin , lie generally of drained scrape cell ) and fail it into lowly discussion section so it strip away . It ’s important to remember that this unconscious process would chance naturally without the AHAs — they just bucket along up the operation . As for how AHAs wangle to break out down level of stagnant pare , the stream pass possibility is that they trigger an influx of calcium into the corneocytes ( the prison cell that shuffle up the social class horny layer ) , which then fit , starring to exfoliation .