Taking a shower after Botox is entirely OK. The water temperature can have a negative effect on your outcomes. After the surgery, hot showers are entirely out of the question. The heat from a shower will boost blood flow to your face, which will cause the Botox to shift and provide artificial results. Other things to avoid following a Botox injection include: Bathing in a hot tub. Steam shower Use hot water to wash your face. As with steam, a hot shower and heat might cause Botox to spread to the adjacent skin areas, producing undesirable outcomes.