Keeping fast during the months of Ramadan, Sha’aban, and on every Wednesday and Thursday is as good as keeping the fast for the entire year.
(Abu Dawood, Sanad Saheeh)

Note: There is no hadith regarding application of Pachhna, or otherwise on Wednesday. The application of Pachhna now is almost obsolete and totally out of practice. Village doctors used to apply it for draining out the dirty and infected blood from the affected part of the body as a means of healing.