Acne Treatments Scarsdale | Blue Light Therapy Westchester
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Scarsdale, NY 10583 (914) 472-4100
Westchester Center for Dermatology

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Effective Acne Treatment with the Help of Photodynamic Blue Light Therapy

Published on March 30, 2018

Photodynamic therapy, or PDT, uses blue light and photosensitizing drugs together to treat various skin conditions. It is an advanced technology used to effectively get rid of age spots and acne.

PDT with blue light is gaining popularity as a way to improve the texture of skin by addressing acne and scars. The therapy was originally developed for treating skin cancer, and over time, researchers found applications for it in various cosmetic treatments.

PDT with Blue Light for Acne

If you are troubled by acne, PDT can be very beneficial for you. If you have acne scars on your skin, you can also use PDT to lighten or remove them.

We will begin treatment by first applying a photosensitizing solution on your skin. The photosensitizing solution contains a substance like aminolevulinic acid (ALA) that is naturally found in human bodies.

If we are using an ALA-based solution for your acne treatment, you will need to wait for 15 minutes to an hour for the solution to soak in. The actual time will depend on your skin’s condition.

After your skin is ready for phototherapy, it will then be exposed to the blue light for around 10 minutes.

PDT is very useful for treating hidradenitis suppurativa, which is an extremely severe type of acne. The condition may require regular PDT sessions to treat this condition.

For other forms of acne, you can see remarkable improvements after a few sessions of PDT that are scheduled a few weeks apart. You will be able to see the full results of the treatment a few weeks after your last PDT session. You may require additional sessions once or twice a year after treatment to maintain your skin’s new healthy texture.


PDT is effective for acne that has acquired resistance to antibiotics. It is effective for treating mild to severe forms of acne. We will adjust the treatment according to the severity of the acne on the skin.

It is a non-invasive and painless treatment. You may feel a bit of discomfort at the start, but the treatment is very tolerable for even people with sensitive skin. PDT can also target specific areas precisely, thereby leaving other skin areas unaffected.

You can resume your normal daily routine after your PDT session. You won’t need to refrain from heavy physical work or experience any downtime.

Post-Treatment Care

After a PDT treatment, your skin will be sensitive to light. It will be necessary to avoid excessive exposure to natural and artificial light for two to three days after each PDT session. If you can’t avoid going out during this time, schedule your session accordingly.

Make an Appointment for a Consultation

You can finally get the treatment you need for your acne and acne scars. Contact our office to schedule your photodynamic blue light therapy consultation. Dr. David Kriegel, a skilled and experienced dermatologic surgeon with numerous satisfied patients, will be happy to meet with you and discuss the treatment in detail. Ready to finally have clearer smoother skin?

Teledermatology with Westchester Center for Dermatology

Dear Patients,

Westchester Center for Dermatology hopes you and your family are staying safe and minimizing your out-of-home activities. In that light, we would like to offer a Teledermatology option.

This service will allow patients to continue their care with the physicians they know while staying safe in the comfort of their own home.

We are seeing patients both virtually and have modified hours for in-office visits. Please call the office (914-472-4100) to arrange these consults or you can send your virtual appointment request to

Click here for more information on our Teledermatology services.