RF Microneedling: Delivering Electrodes into the Dermis for Precise Heating
What Is RF Microneedling?
RF microneedling inserts an array of ~0.2-0.3 mm micro-needles into skin at a set depth (0.5-3.5 mm) and discharges RF energy at the needle tips inside the dermis. Instead of heating from the surface, it heats the chosen dermal layer from within — current barely passes the epidermis, so injury is concentrated and controllable.
Insulated vs Non-Insulated Needles
- Insulated: coated shafts expose only the tip, concentrating energy at the deep dermal endpoint with minimal epidermal heat.
- Non-insulated: the whole shaft conducts, creating a column of heat from deep to superficial — larger dermal volume, more epidermal temperature rise.
Why It Addresses Multiple Problems
- Acne scars: fractional coagulation plus wound healing rebuilds collagen scaffolding under depressions — a mainstream physical option beyond first-line treatments.
- Pores and oily skin: remodeling alters peripore support; some systems also influence sebaceous activity.
- Tightening and fine lines: full-thickness contraction and neocollagenesis.
- Darker-skin friendly: pigment-independent with minimal epidermal heat; relatively safe for melasma-prone skin (still assess at low energy).
Downtime and Course
Erythema lasts 12-48 hours with pinpoint micro-crusts; social recovery within about a day. Standard course: 3 sessions at 4-6 week intervals; scars may need more.
LEIJEX’s gold RF microneedling platform uses insulated needles with vacuum stabilization for scars, pores and tightening.
FAQ
RF microneedling or fractional laser?
For scars with acceptable downtime, CO2 fractional; for darker skin, melasma risk, fast recovery or combined laxity, RF microneedling. The two are often staged together.
Does it hurt?
After 30-45 minutes of topical anesthesia most tolerate it well; bony zones (jawline, forehead) are more sensitive. Vacuum stabilization reduces pinprick pain and keeps depth consistent.