PRP stands for platelet rich plasma. PRP is a natural product derived from the patient’s own blood to help tissue heal and help grow new cells and hair follicles. It contains a high concentration of platelets and natural growth factors. PRP is paired with microneedling procedure for optimal results and over all skin rejuvenation.

How Does it Work?

Microneedling is done using an electronic device which vibrates 14 tiny surgical needles that make microscopic holes in your skin. Before this, the skin gets numbed for 30 minutes using a topical numbing cream and gets taken off by using alcohol wipes. At Knott Street Dermatology we use SkinPen which is one of a few FDA approved microneedling pens for all our microneedling procedures. 

The specialist extracts the PRP by taking a tiny bit of blood using a needle, and then the blood gets placed in a centrifuge device before it gets applied to the skin during the microneedling process.

Is it Right for You?

Looking for a traditional way to reduce your signs of aging? Then you should consider using our microneedling with PRP service. We are a dermatology clinic located in Portland, Oregon, and we know how much a difference the little things can make on your skin. With the help of our aesthetics team, we set up a tailored plan to help you reduce the effects of aging on your skin achieving a youthful and rejuvenated appearance.

Benefits of microneedling with PRP:

  • Reduce acne scars
  • Reduce hyperpigmentation
  • Improve fine lines
  • Decrease pore size
  • Improve overall complexion
  • Improve skin laxity under-eye

How to Prepare for the Treatment:

  • Hydrate, Hydrate, Hydrate. Drink at least 60 oz of water daily starting at least two days before the treatment.
  • Discontinue blood thinning agents such as vitamin E, vitamin A, ginkgo, garlic, flax, cold liver oil, & fish oil.
  • Avoid aspirin, Advil, Motrin, Ibuprofen, Naproxen, Voltaren and other anti-inflammatory medications 7 days prior to procedure. Please consult a physician if you are taking these medications for a medical condition before discontinuing. We want inflammation to occur-as this is one of the mechanism by which PRP works.
  • Avoid excessive sun exposure prior and after treatment.
  • Avoid topical products such as Tretinoin (retin-A), Retinols, Retinoids, Glycolic Acid, Salicylic acid, or other anti-aging or “bleaching” products 5 days in advance.



Checkout our before and after gallery where we feature a few our recent patients. 






Our team is made up of experienced professionals
excited to help and provide personalized care just for you.


Alicia McCarthy, ND

Dr. Alicia McCarthy earned her Bachelor of Science in Kinesiology degree from California State University of Fullerton in 2008 and her Naturopathic Medical degree in 2017 from National University of Natural Medicine in Portland, OR. The twelve years Dr. McCarthy spent working in emergency medicine as an EMT set the foundation for the provider she is today. She now specializes in aesthetic medicine, dedicating her continuing education and practice to staying current on the latest techniques and products. Dr. McCarthy believes in aging gracefully. She takes the time to sit down with each patient and find out what this means for them.

Prior to joining Knott Street Dermatology, Dr. McCarthy had her own practice in Lake Oswego focused on aesthetic medicine, hormone balancing, thyroid conditions, and IV medicine.

Originally from Southern California, Dr. McCarthy has lived in Portland for the last eleven years. When she is not working Dr. McCarthy stays busy with her two young kids, husky pup, and husband. They enjoy spending time outside, camping, swimming, and playing at the park.


Peral Sanchez LE,CAE

Perla is a proud Hispanic who is bilingual in Spanish. She graduated from Spectrum Advanced Aesthetic Institute. Perla grew up in Compton, CA before moving to Oregon and finding her passion for the aesthetic industry. She has a love for skincare and all things ingredients. She’s devoted to continuing her education and has a desire to achieve her clients needs and concerns. She wants “self-care to be an everyday spa like experience.” In her spare time she enjoys hang with her German Shepard (Sable) and exploring Oregon with her Husband.

Rachel Almada advanced Aesthetician from KNOTT STREET DERMATOLOGY

Rachel Almada LE,CAE

Rachael graduated from the Aesthetics Institute in 2020 and recently acquired a Bachelor of Arts from Portland State University. Coming from a dermatology background, Rachael has a passion for skin health and sun protection. Her favorite part about being an Advanced Aesthetician is helping patients reach their skin goals and watching their confidence build because of it. She understands that everyone’s skin requires its own unique approach whether it’s a treatment plan or a skincare regimen.

When she is out of the office, Rachael enjoys traveling, trying new food, making art, and doing pretty much anything outdoors – especially if it includes her Doberman-mix pup, Rubio!

Contact Us

If you have any questions, concerns, or would like to schedule an appointment please let us know. 



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