AI skin analysis from one selfie, then a routine that fits your shelf
Hey, it's Cindy 🌱 You commented SKIN, so here is how to take the photo so the read is actually accurate, and the free apps that do the scan.
btw the waitlist for AI System Club is now open! If you're keen on using AI to automate your content, video editing, job search, business or build AI agents, feel free to sign up (only if you want to hehe). Ps. the waitlist gets first dibs:)
Read this first, it matters. An app reading a selfie is not a dermatologist, and neither is a chatbot. None of this diagnoses anything, and none of it is medical advice. It is cosmetic guidance about routines and product order. If something is painful, itchy, spreading, bleeding, not healing, or a mole that has changed shape, size or colour, book a GP or a dermatologist rather than asking an app. Radien says the same thing in its own medical disclaimer: the analysis is informational, not diagnostic.
Second thing, and I mean it. Your skin is not a problem that needs solving before you are allowed to feel fine about your face. The reason this is worth doing is money: most people own six products that fight each other and buy a seventh because an ad said so. This gets you a shorter, cheaper routine that makes sense.
step one
Take the photo properly
Every one of these tools reads pixels. Soft indoor lighting hides texture, warm bulbs shift your tone, and beauty smoothing quietly erases the exact thing you are asking it to measure. Get this right and the read is genuinely useful. Get it wrong and it is a random number generator with a nice interface.
🌱 Use the back camera. It is the better lens by a wide margin. Prop the phone up, use the timer, and step back a little rather than shooting at arm's length.
💡 Flash on, or flat daylight. Direct flash in a normally lit room flattens shadows and shows texture honestly. If you would rather not use flash, face a window in daylight. Never use a warm lamp, never sit with a window behind you.
🧠 Bare face, no filters. No makeup, no sunscreen sitting on top, no smoothing modes, nothing applied in the last hour. Wash, wait about twenty minutes so freshly cleansed skin settles, then shoot.
👩💻 Hair back, neutral face. Hair off the forehead and cheeks, relaxed expression, eyes open, head straight on. Squinting or smiling reads as lines that are not there at rest.
🌱 Pick a spot and keep it. Same room, same light, same time of day, every time you rescan. Comparisons across different lighting are meaningless, and comparison is the whole point later.
step two
The apps that do the scan
Two I would actually put on my phone, both free to download and scan. Both are consumer apps rather than clinical tools, so treat the numbers as a consistent yardstick to track over time, not as a measurement of truth.
Radien One selfie gives you a 0 to 100 skin score plus five separate metrics: hydration, pores, blemishes, fine lines and evenness. It also estimates a skin age against your real age, detects skin type, and has a product scanner that rates a specific serum against your own scan. Free on iOS and Android, with a paid upgrade for the extras. Worth knowing it is a new app, so weigh the trend over weeks more than any single score.
Rosee Skin The privacy-first pick: the analysis runs on your device and the photos never leave your phone, which matters when the file in question is your bare face. It reads hydration, redness, eye fatigue and glow, decodes ingredient lists by barcode or label against a 280+ ingredient database, tracks progress, and cites dermatology research for its claims. Free on iOS, iPhone only for now.
If you want a third read for comparison, Skin Genius AI is another free scanner on the App Store. Running two apps on the same photo is a good sanity check: where they agree, the signal is probably real. Where they disagree wildly, ignore both on that metric.
no app needed
Or skip the app and ask Claude
You do not strictly need a scanner. Claude can look at the photo directly, and the advantage is that you control the framing of the question, so it describes what it sees instead of manufacturing a precise-looking score.
👩💻 read my photo honestly
Here is a clear, unfiltered photo of my bare face, taken with the back camera in bright even light. Give me a careful cosmetic read of what you can actually see, and say plainly whenever you are not sure or the photo does not show something clearly.
Describe visible texture, apparent hydration, oiliness or flaking, pore visibility around my nose and cheeks, redness or unevenness in tone, and any fine lines. Rate each one as low, medium or high rather than inventing a precise number, and tell me which parts of my face each observation is based on.
Do not diagnose any condition and do not name any disease. Do not comment on my attractiveness or my age. Finish with the two or three cosmetic areas worth focusing on first, one thing that already looks healthy, and anything you think is worth showing to an actual professional instead.
step three
The prompt that builds the routine
This is the part most people skip, and it is where the value is. A score with no plan attached just makes you buy things. Screenshot your scan results, open Claude, attach the screenshot, and paste this with your details filled in.
💡 build my AM and PM routine
I want a simple skincare routine and I want you to act as a careful, evidence-based guide rather than a doctor. Here is my AI skin scan summary: [paste your scores and flagged concerns]. Here is every product I already own, with full names: [list them]. My budget is [amount] per month, I am [age], my skin usually feels [oily / dry / combination / sensitive], and my main concerns in order are [concern one, concern two].
Build me a morning routine and an evening routine using what I already own first, in the correct order of application, and explain in one line what each step is actually doing. Tell me plainly if something I own is redundant or should not be layered with something else I own.
Then give me a four week schedule for introducing any new active, one at a time, showing which nights to use it and which nights to skip while my skin adjusts. Tell me exactly what to patch test and how, and list the specific signs that mean I should stop and see a professional.
Only suggest buying something if there is a real gap, keep the total inside my budget, and give me a cheaper option and a pricier option for each gap. If my routine is already fine, say so instead of adding steps.
Before you act on any of it. If you are pregnant or breastfeeding, on prescription skin treatment, using a retinoid your doctor gave you, or managing a diagnosed skin condition, check the plan with your doctor or pharmacist before you change anything. AI does not know your medical history and will not ask for it.
the rules that matter
Four things that stop you wrecking your barrier
Whatever plan comes back, these four hold. They are the difference between skin that improves quietly and skin that gets angry in week two.
One new active at a time Add one thing, wait, watch. Start five at once and when your face reacts you have no idea which one did it, so you throw out the good ones too.
Patch test first A small amount on your inner forearm or just behind the jaw for a few days before it goes anywhere near your whole face. Cheap insurance against a week of regret.
Start actives slowly Twice a week before nightly, a small amount, and buffer with moisturiser if it stings. Redness, tightness and flaking mean back off, not push through.
Sunscreen every morning The single highest-value step, and the one that makes everything else worth doing. Skipping it while using actives is spending money to go backwards.
step four
Rescan and adjust, not daily
Skin turns over on roughly a monthly cycle, so daily photos will show you noise and make you quit something that was working. Rescan every four weeks in the same spot and the same light, then hand both scans back to Claude.
🧠 four week check-in
I started the routine you built on [date], and here is my rescan four weeks later: [paste the new scores]. The first scan I gave you is above in this chat.
Compare them and tell me what genuinely moved, what did not, and what is likely just noise from lighting or the time of day rather than real change. Be blunt if nothing has changed, and do not find progress that is not there.
Then adjust the plan: what I keep, what I drop because it has now had a fair trial, and whether it is time to introduce the next active or hold where I am. Also tell me anything I have been doing that is working well enough that I should not touch it.
Give any single change eight to twelve weeks before you judge it. Most "this did nothing" verdicts happen at week three, which is roughly one skin cycle in, and about the point where a lot of things are still settling. 🌱