The aftermath of such slippage as in the case of João Henrique of Itaipava was contained and mitigated through the primary use of vetiver. Luiz Lucena of DEFLOR is one of Brazil's leading advocates for the Vetiver System for slope stabilization. He writes:
"Referring to Rio de Janeiro landslides, they occur all along our coastal mountain range called “Serra do Mar” where shallow soils lay right over the rock. The problem is always the water: under heavy rains, the subsurface flows are very strong and once associated to the slippery rock result in landslides. The process begins with subsurface flows transporting soil particles until all friction is gone. In these areas, Vetiver has influence in many different ways: 1) it reduces runoff speed, thus increasing infiltration what may contribute for the landslide process; 2) It also reduces speed of subsurface flows reducing erosion process thus avoiding the activation of the landslide process; 3) where the rock is fractured Vetiver will work as anchor.