How accurate is it?

From photo to verdict

  1. Same photo, not before-and-after

    Both halves are in the same photo, taken in the same light, after the same night's sleep. Anything that affects your whole face cancels out when the treated side is compared with the control side.

  2. YouCam AI maps each concern

    YouCam AI Skin Analysis returns a detection map for each concern (acne, redness, pores and so on).

  3. Two equal areas

    SplitSide finds the middle of your face from 478 face landmarks, builds two mirror-image cheek areas of exactly the same size, and measures how much of each area the concern covers.

  4. Your personal noise range

    Your two cheeks are never identical, and every photo is a little different. Three baseline scans measure that wobble.

  5. Only real changes count

    A change only counts as real when it is bigger than your own noise range on two scans in a row.

What can still fool it

  • Light from one side: the Light Balance Gate blocks it.
  • Product spreading across the middle: a band down the middle is ignored.
  • Natural differences between your cheeks: the baseline removes them.
  • Missed applications: they weaken the result, which lowers the confidence shown.

What it is not

SplitSide measures how your skin appears on photos. It is a cosmetic decision tool, not a medical device. If a product burns, stings or causes swelling, stop using it and see a doctor if it is painful, spreading or not settling.

Previews are simulations, so they never count as measurements.