How deep should I go for acne scars when microneedling with PRP?

OMG. Firstly, one has to determine the scar type, then find the depth of attachments. Histology shows that for tethered scarring the attachment depth is in the mid fat layer. Dermal thickness varies. See a specialist to have EFFECTIVE scar revision treatments. Now, if you have very minor and early scarring, without assessing your scars, a guide of 1-1.5 mm is safe. If you want treatments that work, find out your scar type before going for a treatment.Microneedling has come a long way over the past few years and can help skin via several methods. Firstly it releases cytokines and growth factors in the epidermis and dermis- the top and bottom layers of your skin. This in turn remodels scars and the dermal layer of the skin. Additionally needles can break up scars themselves. This leads to new collagen formation. 



Microneedling is both user dependent and method driven. Simple needles can be used, growth factors can be added after the procedure, including PRP, or controlled heating during the procedure. This controlled heating is delivered via RF, and is called RF microneedling. RF can then be delivered via insulated or insulated needles. Even the energy level, depths, density, pulse duration and so many other variables can be controlled. This together with the added benefits of growth factor infusion makes this one of the most complex procedures in procedural dermatology. I use everything from Dermapen, though to newer generation insulated and non-insulated devices including INFINI micro-needling radiofrequency, Intensif and others. Newer generation devices can provide an added advantage in some, but not all patients. Like most procedures, its 80% skill level of the specialist and 20% dependent on the brand of the energy device- microneedling system. All the best, Dr Davin Lim. Brisbane. Australia.