Gene projector

The Gene Projector is a device which is capable of predicting a newborn baby's future appearance as a young adult by extrapolating physical characteristics from their genome. In Fallout 3, this device was used by James to show the Lone Wanderer how he/she would look "When you're all grown up".

Facial reconstruction
Other than at "birth", there is only one other opportunities to use the Gene Projector to change your character's face: just before you exit Vault 101 after your escape. After that, the only facility to alter your facial appearance is with the Lasergrafter in the possession of Pinkerton in the broken bow of Rivet City.

Haircut
Even though only Pinkerton allows you to change the character's face after the tutorial, there are multiple characters which allow you to change your hair style:
 * If you own a house in Megaton, your personal robot butler Wadsworth will be able to give you a new trim or shave your beard. If you choose the Tenpenny Tower Suite then Godfrey will perform the same service.
 * You can receive a haircut from Butch when you encounter him during Trouble on the Homefront or if you have him as a follower.
 * A haircut is also available from Snowflake in Underworld.
 * It is also available from Joseph in Little Lamplight

Sex
Male/female

Name
Your character's name.

Race
There are four races available. They are:

Face
These are the different ways to customize your character's face.

General options:

Forehead:

Brow:

Eyes:

Nose:

Mouth:

Cheeks:

Jaw:

Chin:

Tone
The different skin tone options.

Eye Color
The color for your character's eyes. There are only four different colors.

Hair
There are many types of hair-do's in Fallout 3.

Hair Color:

Hairdo:

Unisex:

Male:

Female:

Facial Hair: