LED light therapy has become one of the most requested treatments in aesthetic clinics — and one of the most misunderstood. Between salon masks, at-home devices and professional systems, patients and practitioners alike are left wondering what genuinely separates one light treatment from another. Photobiodynamic therapy is Skymedic's answer: a protocol that pairs specific LED wavelengths with photosensitising topical actives, so that light and skincare work as one coordinated treatment rather than two separate steps. This guide explains what photobiodynamic therapy is, how it works at a cellular level, which skin concerns it addresses, and what a complete treatment course looks like — whether you run a clinic or are considering the treatment yourself.
What is photobiodynamic therapy — and how is it different from conventional LED?
Conventional LED phototherapy uses light on its own. A panel or mask emits one or more wavelengths, and the skin's naturally occurring chromophores — light-absorbing molecules such as those found in mitochondria — do whatever they can with the energy that reaches them. It is a well-established approach, and we cover the wider landscape of light-based treatments in our article Phototherapy in Aesthetics: LED, IPL and Beyond.
Photobiodynamic therapy goes a step further. Before and during light exposure, the skin is prepared with photosensitising topical formulations — cosmetic actives selected because they absorb energy at the same wavelengths the device emits. Instead of relying solely on what the skin absorbs by itself, the protocol prepares the tissue so that light and actives interact where the formulation has been applied. The name describes exactly that: photo (light), bio (skin biology) and dynamic (the interaction between the two). It is the approach behind the Fotoage LED device and the Skinox photobiodynamic range, developed and manufactured by Skymedic in Barcelona under an ISO 13485-certified quality management system.
How it works: wavelengths and photosensitising actives
The role of LED wavelengths
Different wavelengths of visible and near-infrared light penetrate the skin to different depths. Blue light, at the shorter end of the visible spectrum, is absorbed mainly in the superficial epidermis, which is why it is traditionally associated with oily, blemish-prone areas. Red light travels further, reaching the deeper epidermis and upper dermis where fibroblasts reside. Near-infrared light penetrates deeper still. Research into photobiomodulation suggests that light in these bands interacts with cellular chromophores — most notably cytochrome c oxidase within the mitochondria — in ways that may influence cellular energy metabolism. The Fotoage device is designed to deliver defined wavelengths, at controlled intensities and exposure times, to support the skin's own renewal processes rather than injuring it to provoke a healing response.
The role of photosensitising topicals
The second half of the equation is the formulation. Each Skinox professional box contains topicals formulated with chromophore-bearing actives chosen to absorb at the wavelengths used in the corresponding light programme. In practical terms, the practitioner applies the product, selects the matching programme on the device, and the light then acts on skin that has been deliberately prepared for it. This pairing is what allows each protocol to be directed at a specific concern: the same device, with a different photosensitising formulation and wavelength, becomes a different treatment.
Four skin concerns, four Skinox protocols
The professional Skinox range is organised around the four indications most frequently seen in aesthetic practice. Each box is a complete photobiodynamic kit designed to be used with the Fotoage device across a full course of in-clinic sessions.
Rejuvenation: Skinox Wrinkles
Skinox Wrinkles is the rejuvenation protocol. It combines red and near-infrared programmes with actives designed to help improve the appearance of fine lines, skin texture and elasticity on the face, neck and décolletage — the three areas where the first visible signs of ageing tend to appear.
Blemish-prone skin: Skinox Blemish
Skinox Blemish addresses acne-related imperfections. Blue-dominant programmes are paired with purifying, sebum-balancing actives to help improve the appearance of congested, blemish-prone skin and support a calmer complexion.
Spots and pigmentation: Skinox Dark Spots
Skinox Dark Spots is directed at the appearance of dark spots and melasma-prone pigmentation. Brightening actives are combined with wavelength programmes selected to support a more even-looking skin tone over the course of the treatment.
Redness and reactive skin: Skinox Redness
Skinox Redness is formulated for rosacea-prone and reactive skin. Soothing actives and gentle light programmes are designed to help improve the appearance of diffuse redness and support the skin's comfort and barrier function.
What a full treatment course looks like
Photobiodynamic therapy is a course, not a one-off session. Each professional Skinox box supports twelve in-clinic sessions covering the face, neck and décolletage, plus one month of guided home treatment. A typical course runs as follows:
- Consultation and skin assessment. The practitioner confirms the indication, checks suitability and selects the appropriate Skinox protocol.
- Twelve in-clinic sessions. At each visit, the photosensitising formulation is applied and the matching Fotoage programme is delivered to the face, neck and décolletage. Sessions are typically scheduled once or twice a week.
- One month of home treatment. The box includes a home-care phase so the skin continues to be supported between and after clinic visits.
- Review and maintenance. At the end of the course, results are reviewed and a maintenance plan is agreed, often with the Skinox Home Treatment range.
For clinics starting out, the Fotoage clinic pack includes the LED device and four professional Skinox boxes, so a practice can offer all four protocols from day one.
Who is it for — and who should wait?
Because photobiodynamic therapy is non-invasive — no needles, no ablation and no significant downtime — it suits a broad range of adult skin types and can be performed year-round. That said, a proper consultation must always come first, and there are situations where treatment should be postponed or avoided:
- Known photosensitivity disorders or a history of light-triggered skin reactions
- Current use of photosensitising medication or topicals (always reviewed at consultation)
- Pregnancy or breastfeeding, where caution and medical advice are recommended
- Active skin infection, open lesions or recent invasive procedures in the treatment area
- Any undiagnosed skin condition, which should be assessed by a doctor before cosmetic treatment
In the European Union, LED-based aesthetic devices of this kind must be CE-marked for their intended purpose, and responsible practice means they are used by trained practitioners who assess each client and follow the manufacturer's protocols.
In-clinic or at home: which do you need?
The professional and home ranges are designed to complement each other rather than compete. The in-clinic protocol delivers the full-intensity programme under professional supervision; the home range extends and maintains the work between visits.
| In-clinic (Fotoage + Skinox professional) | At home (Skinox Home Treatment) | |
|---|---|---|
| Who applies it | A trained practitioner in the clinic | The patient, following the included guide |
| Light source | Fotoage professional LED device | Topical protocol designed for daily home use |
| Course structure | 12 sessions on face, neck and décolletage, plus 1 month at home | Ongoing daily routine after or between courses |
| Best for | Starting a course and treating a specific concern intensively | Maintaining results and caring for the skin day to day |
| Range | Wrinkles, Blemish, Dark Spots, Redness | The same four variants, plus Bluelift |
Each home box mirrors its professional counterpart — for example, a patient finishing a rejuvenation course would continue with Skinox Wrinkles Home Treatment — and Bluelift extends the home range with an additional firming-focused option.
Frequently asked questions
Does photobiodynamic therapy hurt? Is there downtime?
No. Sessions are generally described as comfortable and relaxing — a gentle warmth at most. There is no ablation or injection involved, so most people return to their normal routine immediately, with basic aftercare and sun protection.
How many sessions are needed to notice a difference?
Skin renews gradually, which is why the protocol is built around a twelve-session course rather than a single visit. Responses vary from person to person and depend on the concern being treated, the condition of the skin and consistency with the home-care phase.
Is this the same as photodynamic therapy (PDT)?
No. Photodynamic therapy is a medical procedure using prescription photosensitising drugs to treat diagnosed conditions. Photobiodynamic therapy is a cosmetic protocol: it combines cosmetic photosensitising formulations with LED light to help improve the appearance of the skin, and it does not diagnose or treat disease.
Can it be combined with other aesthetic treatments?
Often, yes — many clinics schedule photobiodynamic courses alongside facials or as a complement to other non-invasive treatments. Timing around invasive procedures should always be decided by the treating practitioner.
Which Skinox protocol is right for me?
That is a consultation question. As a starting point: Wrinkles for visible signs of ageing, Blemish for congested and blemish-prone skin, Dark Spots for uneven pigmentation, and Redness for reactive, redness-prone skin. A practitioner can confirm the best fit — or combine protocols across successive courses.
Next steps
For clinics and practitioners: if you would like to offer photobiodynamic therapy, create your professional account to access the Fotoage clinic pack, professional pricing and protocol training. The clinic pack includes the device and all four Skinox professional boxes, so you can treat every major indication from your first week.
For patients: explore the full photobiodynamic collection to find the Skinox Home Treatment that matches your concern, or ask your clinic about a professional course. Orders within Spain are delivered in 2–5 business days.
