How AI Reads Your Skin: 7 Metrics From a Single Selfie

The scan card on your dashboard returns seven numbers in about three seconds. People often ask what those numbers really mean, how seriously to take them, and what the model can't see. This post is the honest answer.

What the model is actually scoring

Each scan returns a 0–100 score on seven dimensions: hydration, oiliness, texture, pores, radiance, redness, and dark-circle severity. These aren't arbitrary categories — they're the visual cues a dermatologist would call out in a five-second glance, translated into something a computer-vision model can measure consistently.

The model sees pixels, not skin. That's an important distinction. It can't tell you about deep-tissue hydration, your microbiome, or how a product will feel on your face. What it can do is be ruthlessly consistent: the same lighting, the same angle, the same model version, will give you the same number — every time. That consistency is what makes weekly tracking useful, even if the absolute number isn't a medical reading.

Why "take it under the same light" matters more than you think

Skin reflectance is dramatically affected by colour temperature. A warm bathroom bulb (around 2700K) makes skin look more peach-toned and minimises visible redness. Cool office lighting (4000K+) makes pores and texture look harsher. The model accounts for some of this, but it can't fully reverse the physics. If you scan in your bedroom one week and the office bathroom the next, you're not measuring your skin — you're measuring the room.

What we can't see — and won't pretend to

• Anything below the skin surface. Lymphatic puffiness, deep cysts, hormonal acne under the surface — invisible to a 2D photo.
• Texture finer than your camera resolution. A 12-megapixel phone camera at arm's length captures roughly the size of a poppyseed; pores and pigment changes smaller than that blur into the surrounding pixels.
• Anything systemic. If your skin looks rough because you slept four hours, the score will tell you it's rough — it won't tell you to go to bed.

How to read your trend line, not your number

A single scan is a snapshot. The dashboard chart is the actual product. If your texture score moved from 62 to 71 over four weeks of using a chemical exfoliant, that's the model picking up on a real change in how light scatters off your skin. If your score swings 15 points day-to-day, that's almost always lighting or angle — not your skin transforming overnight.

Pair scans with the routine logger and you get something dermatology offices charge for: a per-product correlation chart. Use a new serum for three weeks, see what moves.