Guide · Secret DUO
Secret DUO in Singapore: RF microneedling and a 1540 nm laser in one platform
Secret DUO combines two energies that are usually separate machines. Here is what each does, what the platform is used for, the downtime and risks, and how Dr Sin Yong uses it at SkinRev Lab.
By Dr Sin Yong · Updated
General information only, not medical advice. Your own suitability is assessed at consultation.
Quick answer
- Secret DUO is a Korean device platform, listed by CLASSYS and marketed in the United States by Cutera, that combines microneedle radiofrequency (RF microneedling) with a 1540 nm fractional laser.
- RF microneedling heats the dermis through fine needles; the 1540 nm laser makes microscopic columns of heat through the surface without removing it. Used alone or together, they target texture, acne scars, pores and mild laxity.
- At SkinRev Lab, Dr Sin Yong uses the Secret DUO platform for 4K Body Lift, his radiofrequency microneedling protocol for compact fat and loose skin on the body.
- Facial RF microneedling and other options are explained on their own pages. All doctor-led treatments are priced at consultation.
Two energies
Two energies in one platform
| RF microneedling | 1540 nm fractional laser | |
|---|---|---|
| How it works | Fine needles enter the skin and release radiofrequency heat at a chosen depth | A non-ablative laser makes microscopic columns of heat through an intact surface |
| Main layer | Dermis, and on the body the tissue just beneath | Epidermis and dermis |
| Often used for | Acne scars, texture, pores, mild laxity; body skin and compact fat | Texture, fine lines, superficial scars, stretch marks |
| Usual recovery | Pinpoint marks and redness for a few days | Redness and roughness for a few days |
| Numbing | Numbing cream | Numbing cream or cooling as needed |
Combining the two in one session lets the doctor treat deeper and surface layers together, but it also adds heat, so settings are set conservatively for darker or pigment-prone skin.
At SkinRev Lab
Secret DUO and 4K Body Lift at SkinRev Lab
4K Body Lift is Dr Sin Yong's body protocol on the Secret DUO platform: radiofrequency through insulated microneedles to compact, pinchable fat and the skin over it, in the same visit, under numbing cream. It is used on the tummy, waist, thighs and arms. Expect tenderness and pinpoint marks for some days, and possible bruising. It is not liposuction.
Compared
Secret DUO and other RF microneedling devices
Several RF microneedling devices are used in Singapore, sold under names such as Secret RF, Sylfirm X, Potenza and Morpheus8. All deliver radiofrequency through needles; they differ in needle insulation, pulse type, tip sizes and whether a laser is built in, as on Secret DUO. Device names on this page describe device types for comparison; only the treatments named on SkinRev Lab pages are offered here.
As with any device, the plan, depth and settings matter more than the brand. Dr Sin Yong chooses the depth, density and number of passes for each area at consultation.
Safety
Risks, and who should check first
- Common: redness, swelling, pinpoint marks or small scabs for a few days; tenderness and bruising on the body.
- Uncommon: temporary dark marks, especially in darker or pigment-prone skin; acne flares; grid marks.
- Rare: infection, scarring or a burn.
- Check first: a pacemaker or implanted electrical device, metal implants in the area, pregnancy, bleeding disorders, active acne or infection in the area, keloid tendency, or a gold allergy.
Common questions
Your questions,
answered
What is Secret DUO?
Secret DUO is a Korean device platform that combines RF microneedling, which heats the dermis through fine needles, with a 1540 nm non-ablative fractional laser. It is listed by CLASSYS and marketed in the United States by Cutera.
Is Secret DUO the same as Secret RF?
No. Secret RF is an RF microneedling device on its own. Secret DUO adds a 1540 nm fractional laser to RF microneedling in one platform, so both can be used in one visit.
What is the 1540 nm laser on Secret DUO for?
The 1540 nm wavelength is a non-ablative fractional laser: it heats microscopic columns of skin while leaving the surface intact, to improve texture, fine lines and superficial scars with a few days of redness.
Does Secret DUO hurt?
Numbing cream is applied first. Most people feel heat and pressure with each pass; the body can feel more tender than the face. Discomfort depends on depth and settings, which the doctor can adjust.
What is the downtime after Secret DUO?
Usually a few days of redness, pinpoint marks or roughness on the face, and some days of tenderness, marks and possible bruising on the body. Avoid sun exposure and strong actives until the skin settles.
Does SkinRev Lab use Secret DUO?
Yes, for 4K Body Lift: Dr Sin Yong uses the Secret DUO platform for radiofrequency microneedling of compact fat and loose skin on the body. It is priced at consultation after he has examined the area.