Preparation is simple. Begin with clean hands and a clean face so you are not moving product, makeup, or the day across your skin. Beyond that, the app walks you through any specific preparation and care guidance before each session begins.

A good setup

• Clean hands and a freshly cleansed face.
• Somewhere you can prop your phone so your face is in frame — this matters most for the face-tracking portions.
• A facial oil, serum, or moisturizer within reach for the Sculpt phase, so your hands can glide comfortably.
• A few quiet minutes where you can focus on the movements.

For the oil question specifically, see Should I use oil during the Sculpt phase?.