Two of the most talked-about regenerative treatments in aesthetic medicine are PRP (platelet-rich plasma) and exosome and growth factor therapy. They share the same underlying goal — prompting the body to repair and renew itself — but they are not the same, and in our experience the results can differ meaningfully. Here is how Dr. Susan Lin explains the difference to patients at MD Laser & Cosmetics in San Mateo.
The shared mechanism: growth factors
Both treatments work through growth factors — signaling peptides the body naturally produces to drive healing. When growth factors reach the skin or scalp, they stimulate the production of collagen, elastin, and new tissue to gradually replace older, weaker tissue. That regenerative signal is the engine behind the anti-aging and repair effects of both PRP and exosome therapy.
How PRP works
With PRP, a small sample of your own blood is drawn and spun in a centrifuge to concentrate the platelets. Those platelets, once placed into the skin or scalp, trigger your body to release growth factors — which then do the regenerative work. PRP is autologous (it comes from you), which is part of its appeal.
How exosome & growth factor therapy works
Exosome and growth factor treatments take a more direct route: rather than relying on your platelets to generate growth factors, they deliver concentrated growth factors and exosomes (tiny messengers that carry regenerative signals between cells) more directly to the tissue. The repair pathway is the same; the delivery is more concentrated.
What we have observed over 15 years
In our practice’s experience over the past 15 years, exosome and growth factor therapy has generally produced better results than PRP. As a rough guide, we have found that one growth factor treatment is often comparable to about three PRP sessions — meaning patients may reach their goals with fewer visits. Individual results vary, and the right choice depends on your concern, your health history, and your goals — which is why this is a physician-guided decision.
What we use these treatments for
- Scalp and hair regrowth — supporting follicle health and thicker-looking hair.
- Anti-aging of the skin — stimulating collagen and elastin for firmer, healthier-looking skin.
- Difficult melasma — as part of a careful, physician-guided plan for pigmentation that has been hard to treat.
A physician-guided choice
Regenerative treatments are medical procedures, and the best option is not the same for everyone. At MD Laser & Cosmetics in San Mateo — a physician-led practice established in 2006 — Dr. Lin personally evaluates whether PRP, exosome and growth factor therapy, or a combination is most appropriate for you, and sets realistic expectations about timeline and results.
Frequently Asked Questions
What is the difference between PRP and exosomes?
Both use growth factors to stimulate collagen, elastin, and new tissue. PRP uses your own concentrated platelets to prompt your body to release growth factors, while exosome and growth factor therapy delivers concentrated growth factors and exosomes more directly. In our experience, exosome/growth factor therapy often produces better results in fewer sessions.
Is exosome therapy better than PRP?
In our practice over the past 15 years, we have generally seen better results with exosome and growth factor therapy — roughly one treatment comparable to about three PRP sessions. Results vary by individual, so the right choice is made with a physician.
What can PRP and exosome therapy treat?
We use these regenerative treatments for scalp and hair regrowth, anti-aging of the skin (collagen and elastin stimulation), and as part of a plan for difficult melasma.
Are these treatments performed by a doctor?
Yes. At MD Laser & Cosmetics, Dr. Susan Lin, M.D. personally performs and oversees regenerative treatments.
Curious whether PRP or exosome therapy is right for you? At MD Laser & Cosmetics in San Mateo, every treatment is performed personally by Dr. Susan Lin, M.D. Learn about our regenerative treatments or book a consultation.
