You need one photo of your hair from the back showing the full length. This is what the AI uses to assess your porosity, density, texture, and damage level.
Tips for a good photo:
Use natural daylight — no flash
Hair should be dry and in its natural state (no styling products)
Stand against a plain background
Hold the phone steady to avoid blur
You can take a new photo with your camera or select an existing one from your gallery. If the photo doesn't meet quality standards, the app will let you know and you can retake it.