CellSync™ is a professional-grade spectrum-light therapy device paired with a personalised skincare intelligence app. The Spectrum Mask uses a range of LED wavelengths to support the appearance of your skin, and the CELA™ app guides you through a personalised ritual built around scans of your skin over time. CellSync is a UKCA-marked cosmetic device — not a medical device. For any concerns about a specific skin condition, please consult a qualified dermatologist.

CELA is your personal skincare intelligence agent. She analyses photos of your skin, helps you build a routine, and tracks the appearance of your complexion over time. CELA focuses on appearance-based goals like radiance, the look of fine lines, and the appearance of an even-toned complexion. CELA cannot and will not provide guidance on medical conditions — for those, she'll always redirect you to a healthcare professional.

Every Spectrum Mask purchase comes with a unique invitation code, sent to you by email. Download CellSync Skin from the App Store or Google Play, create your account with your email address and invitation code, and complete your first skin scan. CELA will guide you through your personalised ritual from there.

After you purchase your Spectrum Mask, your unique invitation code is sent to you in a separate email. You'll enter it once, when you create your account in the app. Can't find it? Check your spam or junk folder first, then email support@cellsync.co.uk with your order number and we'll resend it.

Most users find 3–5 sessions per week of around 10 minutes work well. Always use on cleansed skin and follow with your usual skincare. Consistency matters more than session length — short, frequent sessions over weeks support the appearance of your skin better than occasional long sessions.

The mask offers eight carefully tuned wavelengths covering red, near-infrared, blue, yellow, green, cyan, orange, and purple bands — each one chosen to support a different appearance-based goal. See the in-app guide or your product manual for the full mode chart.

The mask is designed for daily cosmetic use across most skin types. If you're new to spectrum-light therapy, start with shorter sessions (5 minutes) and build up gradually. If you have a known skin condition, please consult your dermatologist before using any new device.

Yes. Use the mask on cleansed bare skin, then apply your usual serums and moisturiser afterwards on warm, prepared skin. The mask isn't designed to replace your routine — it complements it.

Most users observe a difference in the appearance of their complexion after 4–6 weeks of consistent use. Individual results vary based on skin type, ritual consistency, and overall lifestyle. Track your scans monthly in the CELA app to see the trend.

While the Spectrum Mask is a cosmetic device with no known contraindications, we always recommend speaking with your healthcare provider before introducing any new device during pregnancy or breastfeeding.

Please consult your dermatologist or the healthcare professional managing your prescription before using the Spectrum Mask alongside any active medical treatment. They can give you proper guidance based on your individual situation.

Every formula is cosmetic-grade, UK-compliant, and built around well-tolerated, evidence-supported ingredients at appearance-effective concentrations. We avoid fragrance unless functional, and disclose every ingredient in plain language on each product page.

Every product page lists the full INCI ingredient declaration. If you're unsure whether something suits you, patch-test on the inner forearm for 24 hours before applying to your face. For specific allergy concerns, please consult an allergist before introducing any new product.

All CellSync formulas are vegan and cruelty-free. We never test on animals, and we don't sell into markets that require animal testing.

UK standard shipping: 2–5 working days. UK express shipping: 1–2 working days when ordered before 1pm. EU and international shipping: 5–10 working days, customs clearance permitting. You'll receive a tracking email when your order ships.

Unopened items can be returned within 30 days of delivery for a full refund. Opened skincare cannot be returned for hygiene reasons. Hardware (the Spectrum Mask and accessories) can be returned within 14 days in original packaging with all components — please email support@cellsync.co.uk before sending anything back.

Currently UK and EU only — these are the regions we currently ship to. International expansion (US, Canada, Australia) is on our 2026 roadmap. Subscribe to our newsletter at the bottom of any page to be notified when shipping opens to your country.

You'll receive a shipping confirmation email with tracking link within 24 hours of dispatch. If it doesn't arrive, check your spam folder first, then contact us with your order number using the form below.

Add items to your cart, click 'Checkout', and enter your code in the 'Discount code' field on the checkout page. Codes are case-sensitive. Only one code can be applied per order.

A skin scan is a quick selfie taken in the CellSync app. CELA analyses the image in real time to generate nine skin metrics — including hydration, texture, radiance, and perceived skin age — along with your skin type and primary concerns. Your selfie is permanently discarded immediately after analysis; only the numerical metrics are stored. For the most accurate result, take your scan in good, even natural light, with a clean face and no makeup.

Your selfie is processed in real time and permanently discarded immediately after analysis. We do not retain selfies on our servers, on our AI partner's servers, or in any backup. Only the derived numerical metrics — your nine skin scores, your skin type, and your concerns — are stored against your account. Our full Privacy Policy explains this in more detail.

No. CELA gives cosmetic and skincare guidance only. CELA isn't a dermatologist, a doctor, or any kind of medical professional, and isn't designed to diagnose, treat, cure, or prevent any medical condition. If you have a medical concern about your skin, please speak to a qualified healthcare professional.

CELA is designed to give skincare and wellness guidance only. If you ask about a medical condition, prescription medication, or something outside CELA's remit, you'll be gently redirected to a qualified healthcare professional. This is intentional — it keeps your guidance safe, appropriate, and within the boundaries of what CELA is genuinely able to advise on.

Your skin scan provides an informational reading based on visual analysis of your selfie. It's not a clinical or medical diagnosis, and it isn't a substitute for advice from a qualified skincare or healthcare professional. Lighting, angle, makeup, and image quality all affect the result, which is why we recommend rescanning every two to four weeks under similar conditions to track meaningful change over time.

On the sign-in screen, tap "Forgot password?" and follow the instructions sent to your email. If you don't see the email within a few minutes, please check your spam or junk folder before getting in touch.

Check your spam or junk folder first — verification emails sometimes land there. If it's not arrived after five minutes, please email support@cellsync.co.uk and we'll verify your account manually.

CellSync Skin is launching soon on the App Store and Google Play. We'll email you the direct download links the moment it goes live, and the download buttons will also be right here on our site. In the meantime, sign up to our newsletter to be notified first.

First, force-close and reopen the app. If that doesn't help, check you're on the latest version (App Store / Google Play). For persistent issues, please submit the form below with 'App & Account' as the subject and describe what's happening — include your phone model and OS version if you can.

Open the CellSync app → Profile → Settings → Delete Account. You can also email support@cellsync.co.uk and we'll handle it manually. Under UK GDPR you have the right to erasure — all your data will be permanently removed within 30 days.

Yes — under UK GDPR you have the right to data portability. Open the CellSync app → Profile → Privacy → Request My Data, or email support@cellsync.co.uk. The export contains only the numerical metrics derived from each scan (your nine skin scores, skin type and concerns) — no selfie image data is included, as selfies are permanently discarded immediately after analysis. We'll send the export within 30 days.