Our method: how the AI puts together your routine

What is the BelleRoutine method?

The BelleRoutine method is how the service turns the answers to a short skin quiz into a morning and evening skincare routine, with real products, their price and a cheaper alternative: an AI suggests, rules written in advance check its suggestion, and anything that calls for a doctor stops it.

Each step, from your side, is described on the How it works page. Here we explain what happens behind the scenes, and what the service will not do.

How does the AI build your routine?

Your routine is written by an AI model from your answers, a table of cosmetic ingredients and instructions written by the BelleRoutine team, then checked by the app before it is shown.

1. Your answers are checked. Skin type, concerns, reaction to the sun, current products, available time, monthly budget, pregnancy or breastfeeding, anything you are currently using on your doctor’s advice: the server checks their format and length. An invalid answer is rejected, never silently corrected. The budget is required.
2. The AI receives only what it needs. Your answers, your photo and a base of cosmetic ingredients (retinol and retinal, AHAs, salicylic acid, vitamin C, niacinamide, azelaic acid, ceramides, panthenol, hyaluronic acid, sun protection and more) drawn from a review of scientific publications and European regulations: for each ingredient, its sources, its level of evidence, its precautions and the situations where it is best avoided. Benzoyl peroxide is never suggested: in Europe, it is not a cosmetic ingredient. Your email address is never passed to it.
3. It follows written instructions. Real products you can buy, named with their size and their price for that size; several brands rather than just one; for each product, a cheaper alternative, also named; your budget as a limit not to exceed; and a short sentence saying why this product was chosen for you, in cosmetic language.
4. The app checks its answer. The total budget shown is recalculated by the app, each product counted once, and never taken from the AI. A reason that is too long or uses clinical language is removed. Ingredients to avoid and the warning signs described below are checked.

The prices shown are the ones the AI associates with the size named: check them when you buy, they vary from one seller to another. The monthly check-in of the follow-up goes through the same checks as the first skin quiz.

What happens when something calls for a doctor?

The safeguard is the set of checks that decide, before anything is shown, whether a routine can be offered to you. It works on two levels, and the more cautious one always wins between what the AI spots and the words you used.

Pregnancy or breastfeeding: retinol and other retinoids are excluded, and the routine is checked to make sure. Something you are currently using on your doctor’s advice does not stop the routine on its own: the instructions ask the AI to leave out the ingredients that do not go well with it. When in doubt, the instruction given to the AI is clear: better to point you to a professional for nothing than to miss a warning sign.

Is BelleRoutine independent from brands?

Yes: no brand chooses, suggests or pays for the products in your routine.

• The AI receives no list of partner brands or products to promote; the instructions ask it to vary the brands.
• The buying links in your routine open a neutral search for the product name. No affiliate links today, so no commission. If affiliate links ever appear, they will be marked as such where they appear (legal notice).
• BelleRoutine sells no products. What you pay for, if you choose to, is the analysis and the follow-up: details on the Pricing page.

Where do the tips and articles come from?

The advice in your routine comes from an AI model guided by the rules described above; the blog articles are written by the BelleRoutine team under a simple editorial policy: cite sources, date updates, invent nothing.

• Every article lists its sources at the end of the page.
• Every article shows its publication date; a revised article also shows its update date.
• No figure without a source, no review or testimonial until real ones exist.
• Cosmetic language: we talk about appearance and tendencies, never illness. A reminder that the advice is cosmetic comes with every article and appears in the site footer.
• No article is signed by a healthcare professional: they do not replace a consultation.

Spotted a mistake in an article or in your routine? Write to us from the Contact page.