The newly de-haired area will be sensitive and red for a bit, so plan your sugaring sessions accordingly. Since the process opens your pores, it's beneficial to apply a mild astringent, such as Thayers Original Facial Toner, $8.79, to ensure that no bacteria gets in.
Claghorn recommends waiting at least 48 hours before exposing newly sugared areas to the sun, applying cosmetics, or getting into hot tubs/ pools since "skin is more susceptible to UV rays and bacteria during this time period."