Actinic keratoses (AK) are small skin lesions often found on the scalp and face, caused by repeated exposure to the sun. Although often inconspicuous, they represent arisk of progression to skin cancer. For patients, their treatment can be complex, especially on the scalp covered with hair.
Why actinic keratoses of the scalp are a major issue
Actinic keratoses, a common but underestimated problem
This is whereindoor dynamic phototherapy comes in, a modern, non-invasive, and effective approach made even more convenient thanks toDermaris PDT lighting.
PDT Dermaris: what is it?
PDT Dermarisis an innovative medical lighting system designed to activate the photosensitizing cream used in dynamic phototherapy. Thanks to its advanced technology, it faithfully reproduces artificial daylight, ensuring:
Uniform exposureacross all lesions
Optimal comfortfor the patient
Flexible sessions, adaptable between 1 and 2 hours depending on clinical needs
This light is particularly suitable fortreating actinic keratoses of the scalp, where access and visibility are often challenging.
Recent studies confirm the effectiveness of one hour of treatment.
Two recent studies highlight the effectiveness of indoor PDT for the scalp:
Study published in Dermatol Ther (Heidelb)
P. Antonetti et al. compared 1 hour and 2 hours of exposure on different areas of the scalp of the same patients. Result:one hour is sufficient to eliminate lesions, with increased comfort for the patient.- Study presented at WCM 2025
The researchers treated different areas of the scalp in the same patients to directly compare the efficacy and tolerance of the two protocols.
The results: less time, same effectiveness
Good news for patients and practitioners: one hour of exposure wasjust as effective as two hoursin eliminating lesions. In addition, patients experienced less discomfort, which may improve treatment adherence and facilitate sessions in a clinical setting.
Why is this important to you
For people affected by actinic keratoses, this study shows that it is possible to benefit from fast, comfortable, and effective treatment. For dermatologists, this means that a shorter session may be sufficient, optimizing consultation time and patient management.
The intrapatient study confirmed that1 hour of indoor dynamic phototherapy is just as effective as 2 hours, while reducing discomfort.
Why choose Dermaris PDT lighting for your patients?
With PDT Dermaris, dermatologists have areliable and user-friendlytool for treating actinic keratoses:
Time saving: one hour of exposure is sufficient
Safety and uniformity: controlled and precise light on all areas to be treated
Improved patient experience: optimal comfort and less discomfort during the session
Scientific evidence: recent clinical studies demonstrate the effectiveness of this protocol.
In practice, this allowsseveral patientstobe treated each daywithout compromising the quality or safety of care.
The modern solution for actinic keratoses
Indoor dynamic phototherapy, when combined with high-performance lighting such asPDT Dermaris, transforms the treatment of actinic keratoses of the scalp.
Effective: clinically proven results
Quick: one hour session is sufficient
Comfortable: better patient experience
Practical: facilitates practice management for dermatologists
For any dermatology clinic wishing to offer amodern, scientific, and comfortable solution,PDT Dermarisis the essential tool.
Scientific references
Dermatol Ther (Heidelb) – "Indoor Daylight Photodynamic Therapy for Actinic Keratosis of the Scalp: Intrapatient Comparison Study of 1 h versus 2 h Exposure Time" – P. Antonetti et al.
WCM 2025 Book of Abstracts – "Intrapatient comparative study on indoor daylight photodynamic therapy (IDL-PDT) with exposure time 1 hour vs. 2 hours for the treatment of multiple actinic keratoses of the scalp" – P. Antonetti et al.