im not sure but i know you need to avoid certain oils or something and stay away from pedicures (especially later on) cause certain pressure points are supose to cause contractions
but you should try to avoid the fumes, i think they can be harmful, i know they cause me to gag everytime i pass a nail place and my throut startes to close up
be sure to deffinantly tell the person that you are pregnant, you dont want to risk anything, and they *should* know what to avoid
~alicia~