I get small pimples on my arms and legs after a week of waxing. what should i do to prevent them?

Lubricate: Use an emollient a day or two prior to waxing. The waxing process is a trauma that yanks hairs out of their follicles, with resultant inflammation of those follicles. If your skin is more lubricated, the trauma is less.

Red bumps and waxing: Red bumps after waxing are know as folliculitis or inflammation of the hair follicle. Low dose (1%) Hydrocortisone cream one can buy over the counter should help. You might consider laser hair removal(lhr). See http://www.Accskin.Com.