How to take a selfie worth analysing
29 August 2026 — 4 min read
Any analysis of skin from a photograph is an analysis of the photograph. Get the photograph right and the reading is useful; get it wrong and the honest answer is that there is no reading to give. Five things decide it.
Face a window
Indirect daylight, coming from in front of you, with nothing strongly coloured behind. Overcast is better than bright sun. Avoid ceiling lights entirely — light from above drops shadow into exactly the places being read, and a warm bulb hides the redness you are trying to measure.
Nothing on your skin
Base, tint, primer, powder and highlighter all sit on top of the readings. Even a light tint changes the apparent hydration and flattens texture. Sunscreen counts too — a mineral one especially, which lifts the whole reading paler.
Hair back, glasses off
A fringe over the forehead removes a third of the surface being read. Glasses put a shadow across the cheekbone and a reflection over the eye. Both are the difference between seven readings and four.
Fill the frame, straight on
Brow to chin, filling most of the frame, camera at eye height. Held below eye level the jaw distorts; held above it the forehead does. Straight on gives both sides of the face the same light, which is what makes a comparison later possible.
Hold still, and let it focus
Softness reads as smooth skin. A blurred photograph does not return a gentler verdict — it returns a wrong one, or none.
If you plan to compare
Take the next one the same way: same window, same time of day, same angle. Boirelle helps with the last of those by fading your previous scan over the viewfinder and holding up a prompt until your head is within a few degrees of where it was. Two photographs taken at different angles cannot be honestly compared — a face turned further into the light simply reads as better skin.