Microneedling vs RF microneedling:
the needle, and what happens at the end of it

What is the difference between microneedling and RF microneedling?

The needle is the same idea in both; the difference is what happens when it reaches the dermis. In plain microneedling, a motorised pen or a roller drives fine needles through the epidermis to a set depth, usually between 0.5 and 2.5 mm, and withdraws them. Each channel is a tiny mechanical wound. The skin responds as it does to any wound: a short inflammatory phase, then fibroblasts laying down new collagen and elastin as it heals. The published literature calls this percutaneous collagen induction, and a 2018 review and practical guide in Dermatologic Surgery describes its uses for scars, fine lines, texture and as a route for delivering topical agents. No energy is involved; the needle does all the work.

In RF microneedling, the needles are electrodes. They enter to a depth the doctor sets, and a bipolar radiofrequency current passes between them so that the tissue around each tip is heated in a small column. With insulated needles the shaft carries no current, so the epidermis is pierced but not heated; only the exposed tip releases energy, inside the dermis. The thermal zone is what remodels collagen, and because its depth is dialled rather than fixed, the same device can be set for a shallow pore and a deeper rolling scar. The insulated microneedle glossary entry explains the needle design; the RF microneedling devices compared page lists what each platform files with the FDA.

What does microneedling change, and what does RF microneedling change?

Microneedling changes the surface and the upper dermis. Fine lines, rough texture, mild enlarged pores and shallow, superficial scars are its territory, and the evidence base includes a randomised trial in Dermatologic Surgery comparing microneedling with a non-ablative fractional erbium laser for atrophic acne scars, in which both improved the scars and microneedling produced fewer side effects, in particular less post-inflammatory hyperpigmentation. It is also used as a delivery method: channels made by the needle carry a serum or a skin booster into the skin, which is the basis of needling-assisted treatments.

RF microneedling changes the dermis at depth. Rolling and shallow boxcar acne scars, enlarged pores, oily texture and the early slackening of the lower face are dermal problems, and the thermal columns are placed where they sit. An early study of a fractional radiofrequency microneedling device for acne scars in Indian patients, Fitzpatrick IV and V, reported improvement in scar grade with transient post-treatment effects and darkening in a minority, which is the pattern seen since: the surface is spared, but the heat is real and the settings still have to respect the skin. Neither approach releases a tethered scar, which needs subcision first, or an ice-pick scar, which goes to TCA CROSS; the acne scar treatment page sets out how depth decides the order.

“A needle makes a channel. What I want is heat at the bottom of it, at the depth the scar actually sits, and nowhere else.”

Dr Sin YongOn why depth control matters more than the needle

What is the downtime for microneedling compared with RF microneedling?

Both spare the surface, so neither carries the open-wound recovery of ablative resurfacing, and the difference between them is a matter of degree. After microneedling the skin is pink, tight and faintly rough, with pinpoint bleeding during the treatment and little afterwards; make-up and normal routines usually resume soon, and the pink fades. After RF microneedling there is more to settle: the thermal columns add swelling to the redness, a faint grid of marks can be visible where the cartridge landed, and the skin can feel warm and dry while it heals. How long each phase lasts depends on the depth, energy and coverage used, which is why the RF microneedling downtime page describes phases rather than a timetable.

Risk follows the same logic. Microneedling's risks are infection if the skin is not clean, tram-track marks from a roller used too firmly, granulomas from products that should not have gone through a needle, and darkening in reactive skin. RF microneedling adds heat: a setting too high for the skin can leave small burns, a grid of pigment or, rarely, fat loss where the thermal zone sat too deep in thin skin. In Fitzpatrick IV to VI skin the review of radiofrequency and RF microneedling in skin of colour found the technology workable, with post-inflammatory hyperpigmentation the complication to watch for, and the RF microneedling in Asian skin page explains how insulated needles and conservative energy manage that. Active acne, infection, a cold sore, a keloid tendency, recent isotretinoin and pregnancy defer both.

Who suits microneedling, and who suits RF microneedling?

Microneedling suits a surface problem in someone who wants a lighter treatment: rough texture, fine lines, mild pores, superficial scars that are already shallow, and skin that is reactive enough that even insulated heat gives pause. It also suits a maintenance role between other treatments, and as the route for a skin booster. It does not suit a scar with a base that sits well below the surface, early jowling, or anyone expecting a dermal problem to resolve from a surface treatment; those plateau and are then blamed on the technique.

RF microneedling suits a dermal problem: rolling and shallow boxcar scars, pores that look large because the collagen around them has loosened, oily textured skin and the soft early laxity of the lower face. In darker skin it is often the more conservative choice for scars than a fractional laser, because the surface is spared, and it can be combined in the same visit with the 1540 nm fractional laser where the skin around a scar also needs attention. It does not suit a tethered scar until that has been released, deep laxity that belongs to VF Lift – Vertical Facelift or focused ultrasound, or pigment, which is a laser question. Someone offered microneedling as a facial should know which kind they are being offered; the which RF microneedling page helps sort that.

Sorted at assessment

• Scar type and depth, judged by stretching the skin: a scar that softens on stretch is dermal and suits RF; one that stays pinned is tethered and needs subcision first.
• Skin type and any darkening after earlier treatment, which decides needle type and energy.
• Whether the concern is surface or dermal, which decides whether a needle alone is enough.
• What else is planned, so that the order is right: subcision or TCA CROSS before, a skin booster after.

The main guide to microneedling in Singapore covers both kinds, by concern, with recovery and risks.

Why is Secret RF used here, and how does Dr Sin Yong plan it?

RF microneedling here is performed by Dr Sin Yong on the Secret DUO, ILOODA's platform, which files a 2 MHz bipolar system with needle depth adjustable from 0.5 to 3.5 mm in 0.1 mm steps and adds a 1540 nm non-ablative fractional laser on the same console. The fine depth control is the reason it suits the way he works: depth, needle type and energy are set zone by zone after examining what is driving the texture, because a rolling scar on the cheek, a pore on the nose and early slackening at the jaw do not want the same column of heat. He is a global Key Opinion Leader for the Secret RF platform and has been invited by the manufacturer to share his clinical expertise with doctors internationally; the device page describes it from its regulatory filings and published studies rather than claiming it outperforms others.

Plain microneedling is not the tool he reaches for when the problem is dermal, which most scar and pore concerns are by the time they reach a clinic. Where a needle alone is the right tool, as the route for a skin booster, it is sequenced with RF rather than instead of it, as set out on skin boosters with RF microneedling. What decides the plan is the examination: scar type and depth, skin type, how the skin has reacted to earlier treatment, whether acne is active, and what has to happen first. Aftercare for RF microneedling is explained on the day and is broadly consistent: keep the skin clean and cool, bland moisturiser, no make-up until the surface has closed, sun protection, and no actives or exfoliation until the review. Fees follow the plan and are set out in writing after assessment, as explained on how fees are quoted.