Everything you might want to know

You create an account, complete a short intake — your age range, sex, current medications, and skincare routine — and upload clear photos of the skin you want assessed. Our AI reviews your photos alongside the details you provided and returns a personalised written analysis with clear observations and suggested next steps. The whole process takes just a few minutes.

No. Dermatrix is an informational tool, not a medical service, and it does not provide a diagnosis or medical advice. It can help you understand your skin and decide what to raise with a professional, but it is not a substitute for evaluation by a qualified dermatologist or physician. If a concern is painful, changing, spreading, or otherwise worrying, please see a healthcare professional.

Your photos are uploaded over an encrypted connection and stored in a private, access-controlled location — they are never public and are never indexed by search engines. Images are used only to generate your assessment and are deleted within 24 hours of processing. We do not sell your data or share it with advertisers.

No. Dermatrix is designed to be used anonymously — we never ask for your real name. You sign up with an email address, which is used only to secure your account and is hashed (irreversibly scrambled) after verification, so it is never stored in plain text.

Dermatrix runs on MedGemma, Google's open medical AI model. On US-DermMCQA — a dermatology multiple-choice benchmark — the version we use scores about 72% accuracy, compared with roughly 53% for an equivalent general-purpose model. A benchmark like this is a useful reference point, but it is not a measure of real-world diagnostic accuracy: it tests standardised questions, not how well the model reads your individual photos, which also depends on image quality and lighting. Dermatrix is designed to give you informational insight, not a diagnosis. It is not a medical device, and it should never be relied on for urgent or serious concerns — such as a new, changing, or unusual mole, or anything that could be skin cancer — which require evaluation by a doctor.

Dermatrix focuses on common, visible skin concerns — for example acne, rosacea, eczema and other forms of dermatitis, everyday dryness, and uneven pigmentation or dark spots. Rather than handing you a definitive diagnosis, it gives an informational read of what your photos and intake suggest, so you can understand your skin and decide what to raise with a professional. The model behind it (Google's MedGemma) is a general medical AI applied to skin, not a specialised dermatology classifier, so treat it as a knowledgeable starting point rather than an expert's eye. Some things are out of scope by design: Dermatrix cannot evaluate possible skin cancer, new or changing moles, or anything that needs physical examination, lab tests, or a biopsy — please see a doctor for those.

Turnaround depends on current demand, so it can range from a short wait to a bit longer during busy periods. You don't need to stay on the page: once your photos are submitted, your assessment runs in the background and your dashboard updates its status live — Submitted, then Analysing, then Complete — so you can close the tab and come back when it's ready. Your finished analysis will be waiting on your dashboard.

Dermatrix is built and operated by the Dermatrix team. The analysis is powered by MedGemma, an open medical AI model developed and released by Google (see the MedGemma Technical Report, Sellergren et al., 2025, arXiv:2507.05201); Dermatrix is an independent service that uses this model and is not made, endorsed, or reviewed by Google. To be clear about how it works: your assessment is generated automatically by AI and is not reviewed by a doctor or other medical professional. That is precisely why Dermatrix is meant as an informational starting point rather than a diagnosis — for anything that worries you, please see a qualified clinician.