The number of consecutive days that Footlight San can be used depends on the specific degree of keratinization of the patient’s skin. If the degree of keratinization is particularly high, for example, if the keratin layer of the feet is particularly hypertrophic, Footlight San can be used for 3-4 days, or even up to a week is possible. However, if there is no significant keratinization, the drug can usually be stopped for 2-3 days. If the patient has very low keratinization of the skin, 1-2 days of use is sufficient. However, if the patient’s skin is not keratinized or even appears to be somewhat eroded, Footlightsan should not be used because it will instead cause increased inflammation in the lesion area and even secondary infection. Therefore, the use of pediculosis must be treated with caution, and it is best to determine the specific time and frequency of use according to the doctor’s judgment.