Hair Restoration with PRP


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 can be applied topically, injected into the skin, or combined with other procedures like microneedling to attain the desired outcome.

The treatment is well tolerated and typically requires a series of treatments for optimal results. The best thing about PRP is that there is little to no downtime and minimal side effects.


Hair loss can significantly affect your appearance and confidence. If you have been looking for hair loss treatment that does not require surgery yet produce natural results, platelet-rich plasma injections should be at the top of your list. 

PRP treatments can be very effective in treating male and female pattern hair loss or androgenic alopecia. PRP injections treat hair loss from the inside out by stimulating inactive hair follicles to promote hair regrowth while slowing down future hair loss. It’s non-invasive, pain-free, convenient, and requires little to no downtime.

At Knott Street Dermatology & Aesthetics injections are performed by our aesthetic provider and focused on personalized treatment plans. 

What Should I Expect During PRP Hair Restoration?

The provider will perform a basic blood draw which will be used to create concentrated plasma for the treatment, topical numbing will be applied to the scalp, and then injections of PRP will be placed into the scalp. You may experience mild swelling and redness afterward. 

Results after a treatment of PRP hair restoration are gradual initially seeing results in two months and continuing to see results improve over the next six-twelve months.  

Number of treatments recommended varies per individual but typically four treatments a month apart is recommended for optimal results. Followed by maintenance treatments every six to twelve months. 

Who is a good candidate for PRP hair restoration?

  • Male or Female
  • Thinning hair
  • Receding hairline
  • Baldness (including small spots)

How to Prepare for the Treatment:

  • Drink plenty of water. Hydrate, Hydrate, Hydrate. Drink at least 60 oz of water daily starting at least two days before the treatment.
  • Avoid blood thinning agents such as vitamin E, vitamin A, Gingko, Garlic, Flax, Cod Liver Oil, Fish Oil, and multivitamins; a minimum of 7 days prior to the procedure. 
  • 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 mechanisms by which PRP works.
  • Minimize or avoid alcohol consumption 3 days before.
  • Refrain or minimize smoking prior as this impacts healing process.  

PRP Injections for undereye:

  • Great for rejuvenating skin under the eye
  • Increase in skin volume and elasticity
  • Smooth the crepey skin under-eye

Read more about under-eye treatments

PRP with Microneedling:

  • Reduces fine lines and wrinkles 
  • Improves skin texture and tone
  • Erases acne scars and hyperpigmentation
  • Diminishes sun damage
  • A youthful, healthy glow, and more!

Learn more about PRP Facial



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.

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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