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In addition to diagnosing your condition, removing skin cancer & other skin lesions, prescribing medications, enhancing your natural beauty and offering medical grade skin care, we also offer specialized medical dermatologic therapies.

Photodynamic Therapy


Photodynamic therapy (PDT) is one of our favorite treatments for the treatment of precancerous AKs because it not only treats the spots you see, it also treats the ones you may not be able to see.  The PDT team of Johnson Dermatology has been recognized as experts and have  been chosen to teach other doctors about the benefits of PDT. 


This treatment was approved in 1999 and there are no reports of scarring; making this treatment both safe and effective.  PDT is also safe and effective for the treatment of acne and photoaging.  If you are a current patient and have questions about PDT, please email sabrina@johnsondermatology.com.



Click here for a printable document overview of what to expect if you have an upcoming PDT appointment. 


Things to Know About PDT

  • Some insurances require precertification for this procedure. If you are concerned that your insurance company might require a prior authorization for this procedure, please contact them directly and ask if you need prior authorization for photo dynamic therapy.

  • For treatment of face only: Please come to clinic with no makeup. No shaving, waxing, or hair removal treatments on face before treatment. This could cause a very intense reaction to the light treatment and could possibly cause blistering.

Blue Light Therapy


BLU-U is a non-drug therapy for moderate acne. It is a specific wave of light that kills the acne bacteria in your skin. BLU-U treatments are gentle and can be used together with your current acne regimen.
Individual treatments are $50 for one treatment. We advise at least 8 treatments to see improvement either once or twice per week. The cost for 8 treatments is $250. If you are interested in BLU-U light treatments for your acne, please email our specialty nurse at nurse@johnsondermatology.com

UV Phototherapy


At Johnson Dermatology, we typically encourage you to practice sun smart behaviors and limit your exposure to ultraviolet (UV) light. This is because UV light causes mutations in the skin that may lead to skin cancer AND lowers your immunity/inflammation in the skin. Some people however suffer from too much inflammation in their skin. These conditions include but are not limited to atopic dermatitis/eczema, psoriasis, pruritus/itching, and vitiligo.

Phototherapy is the use of light to treat skin disorders. In order to limit the side effects of phototherapy, we exclusively offer narrowband UVB. Narrowband UVB emits only wavelengths of 311-312 nm providing maximal effectiveness of decreased inflammation in the skin and shorter more effective treatments.


By eliminating wavelengths below 300 nm, the risk for severe burning and the increased risk of skin cancer are diminished. If you think you would benefit from phototherapy or are a health care provider who would like to refer a patient for phototherapy, please email us at nurse@johnsondermatology.com

Patch Testing


Some people suffer with rashes that may be caused from an allergy to something they come in contact with in the environment. This type of rash is called contact dermatitis. Poison ivy is a classic example. Patch testing is a type of skin allergy testing where allergens/ingredients/products are placed in contact with your skin for 48 hours to help determine to what you are allergic. There are no needles or injections involved. We offer extended allergen patch testing at Johnson Dermatology.

After we determine which allergens to which you are allergic, we encourage you to meet with our skin care experts to discuss your reactions and make a plan to improvement of your symptoms at no extra charge. If you think you have contact dermatitis or a contact allergy, contact us to schedule an appointment.



At Johnson Dermatology, we have 4 of the most respected lasers.  The laser team at Johnson Dermatology has all had specialized laser training as well as personalized training by Dr. Sandy.  Dr. Sandy has more than 18 years of experience with lasers, served on the Arkansas State Medical Board’s committee on laser safety, and has taken extensive laser courses. 


Some of the uses of our lasers are purely cosmetic and therefore not billable to insurance however some of the uses have medical indications.  For example our pulsed dye laser (PDL) in our hands is very successful at treating vascular malformations such as port wine stains/birthmarks and psoriasis.  For more information about our lasers, please email tasha@johnsondermatology.com,  visit our laser page in the cosmetic section of our website or contact us to make an appointment.

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