On Mars, in the present or past, highly concentrated liquid brine is suggested to have formed repeatedly through ice melting and/or deliquescence. Such repeated seepages of brine could generate characteristic geomorphic features on Mars; however, the dynamics of repeated brine flows have been little investigated. Here we report results of laboratory experiments that investigate the flow behavior of brine (MgCl₂ solution) upon repeated cycles of seepage and drying in glass beads on slopes. We compare the flow behavior with those of ultrapure water and ethylene glycol. We found that at a low flow rate, comparable to ice melting on Mars, both ultrapure water and ethylene glycol infiltrate radially into glass beads as infiltration flows. In contrast, even at a low flow rate, surface flows appear due to repeated seepages of MgCl₂ solution. The surface flows move downward on slopes, forming elongated flow features. This happens because a decrease in the porosity and permeability of the glass beads caused by precipitated salts prevents infiltration in subsequent brine seepages. We suggest that precipitated salts have a role in the formation of transient surface flows on Mars, even at low seepage rates.