The correct effect of using passive voice in the given sentences is:
By using the passive voice, there is more emphasis on the actions (doing hair, nails, and makeup being put on) than the actor (Tim).
In the passive construction, the focus shifts from Tim, the doer of the actions, to the actions themselves and the subject receiving those actions (Ellie's hair, nails, and makeup). This can create a more neutral tone and emphasize the process rather than the individual's involvement.