How deep does the needle go for PRP in the scalp?

So it typically is 6-8mm its a very thin needle used to inject the prp. If you have an aversion to needles I would speaks with your hair loss expect because although topical anesthesia is used some people still feel some level of discomfort despite the topical anesthesia you may need to use non injectable treatments such as FDA approved topical Minoxdil in combination with FDA approved Low light laser therapy by itself and see if that is enough. Frequency for initial treatment is typically 2-4 weeks repeat.

Generally we use very small needles that penetrate under the scalp into the subcutaneous region.  While using small needles means it takes us a little longer to perform the treatment, it is often much more comfortable for patients.  Please consult with a board certified specialist who can assist you with achieving the results you seek.