Photodynamic therapy for acne also known as blue light therapy is a treatment that employs a light source and photosensitizing drugs. Usually such treatment is performed by a physicians.
Photodynamic therapy has three steps:
Administration of photosensitizer molecules
The first step in photodynamic therapy is application of light-sensitizing cream, liquid, or intravenous drug. In some cases a photosensitizing molecule that is part of the body can be stimulated.
the drug is administered, that person has to stay for minute or to days.
Activation of light
Activation of light is a final steps in this process. A specific light wave length has been used on the targeted skin part in order to activate photosensitizing molecule. Currently, dermatologist uses a range of different light sensitizing drugs and different incubation period depending on the severity of acne.
number one limitation of this method is the depth of penetration of light in to
the affected area. Usually it is effective within one centimeter of depth of
penetration. As a result, only acne problem with in this range can be treated
Since photodynamic therapy causes a short-term sensitivity to
light, including natural sunlight and some indoor lights light avoidance is
necessary for at least a minimum of six weeks depending on the drug type and
Some drugs such as topically applied methyl aminolevulinate
or aminolevulinic acid may result skin sensitivity for a short period of time
around 24-72 hours. Discuss with your dermatologist regarding the period of
light avoidance required after your treatment.
It is important to talk to your doctor regarding the skin care you should follow after photodynamic treatment. The followings are common lists of what to do after treatment:
Notify your doctor if you encounter unexpected reactions such as cold-sore outbreaks, extreme swelling etc. Under such circumstances, medication such as oral antibiotics, or tablets may be prescribed.Home › Laser and light acne treatments › Photodynamic therapy for acne