少女光 at IN Eternity Clinic uses a fractional 675 nm laser that targets collagen itself instead of the water in the skin. It reaches further down than the clinic’s other laser protocols, to the reticular dermis where the skin’s structural framework lies. IN Eternity Clinic is a certified DEKA Centre of Excellence, and Medical Director Dr Sin Yong is an International Key Opinion Leader for DEKA.
Most resurfacing lasers rest on the same premise: to change the dermis, heat the water inside it. Water absorbs the light, the tissue warms up, and collagen remodelling happens as a by-product of that heat.
675 nm works on a different basis. Its energy is absorbed mainly by collagen, so the structural protein is targeted directly rather than the fluid surrounding it. As a result, the effect can be achieved with less energy spilling into neighbouring tissue.
On the DEKA RedTouch Pro, this wavelength is delivered in a fractional pattern: a scanner places tiny zones of heating while a contact cooling handpiece keeps the epidermis cold for the whole treatment. The skin surface stays intact, and the work takes place beneath it.
IN Eternity Clinic offers three separate laser protocols, and a common question is which to choose. There is no one correct answer: the three are not rivals but work at different depths on different targets, and your skin’s presentation decides which layer needs treating.
T2 Frax Radiance is a picosecond, photoacoustic protocol for pigment that is already present in the skin. R2 Glow works closer to the surface on inflammation, tackling one cause of dull, uneven tone before pigment forms. 少女光 uses 675 nm to reach the reticular dermis, around 2 to 3 mm deep, where the collagen framework and small blood vessels lie.
In short: pigment, inflammation and structure. Many plans at IN Eternity Clinic combine more than one protocol. The order matters, though — the concern is identified first and the device is chosen to fit it, never the other way round.
Collagen is the main absorber at 675 nm, but the wavelength also acts on the vascular part of the dermis. This is why it is used for facial redness and as a rosacea laser treatment aimed at the vascular form of the condition.
It is important to be straightforward about rosacea. It is a long-term condition that flares and settles; it is controlled rather than cured, avoiding triggers matters as much as any treatment, and any protocol claiming to clear it for good deserves scepticism. A laser aimed at the vascular component can tackle one contributing factor, but the underlying tendency remains.
Plenty of the redness seen at IN Eternity Clinic is not rosacea: lingering red marks after acne, a damaged skin barrier from too many treatments, or irritation from harsh products. Each of these calls for a different approach, so the first step is working out which one is present.
For acne, the laser is aimed at the inflammation surrounding the follicle rather than at individual spots. It works together with medical treatment, not in its place, because no laser changes the hormonal and follicular factors that cause acne to begin with.
Pores are often misunderstood, so the reasoning is worth setting out. Pores have no valve to shut. How large one looks depends on the collagen and elastic tissue in the dermis around it; as that support weakens, the edge of the follicle loses definition and the pore appears bigger. Treating dermal collagen therefore works on the supporting structure rather than on the pore, which is why meaningful pore treatment is, in practice, collagen treatment.
Texture follows the same logic. Fractional treatment triggers healing across the whole treated area, and the skin reorganises as it repairs.
Since 675 nm targets collagen directly and the epidermis stays protected throughout, 少女光 can be used in a way most resurfacing lasers cannot. For skin tightening it is designed for regular maintenance rather than heavy correction, and as a skin rejuvenation treatment each session demands less of the skin than an ablative laser would.
This reflects two different approaches to ageing. One is to wait until skin has clearly loosened and then treat it intensively. The other, which 少女光 is designed for, is to support the collagen framework at intervals before the loss becomes structural — a gentler demand on the skin each time.
少女光 also pairs well with IN Eternity Clinic’s structural treatments: the VF Lift (Vertical Facelift) for volumetric lifting, and HIFU or Ultherapy when lifting at the SMAS level is the goal. Each works on its own layer.
Treatment at IN Eternity Clinic is planned individually, so the cost follows the plan rather than a fixed list. The factors that shape it are discussed at consultation:
A figure quoted before assessment would not reflect your presentation. Cost is set out clearly at consultation, before anything is agreed.
“We work out which layer needs attention first — pigment, inflammation or structure — and only then choose the laser.”
On the DEKA RedTouch Pro, the contact cooling handpiece keeps the skin surface cold while the 675 nm energy is delivered beneath it, and that cooling does much of the work for comfort. Most people feel warmth and a light prickling as the scanner moves across each area. The cheeks over bone and the area around the nose tend to feel the most; the energy is adjusted area by area.
Many people need no numbing, particularly at maintenance settings. Numbing cream can be applied for 20 to 30 minutes beforehand if you are sensitive or if a more intensive pass is planned. Protective eyewear is worn throughout. Afterwards the face feels warm, like mild sunburn, for a few hours. If you have rosacea, tell the clinic about recent flares, as heat after treatment is managed with extra cooling.
The 675 nm protocol is designed to fit a regular maintenance schedule, so recovery is kept short and predictable.
Yes. Most people have redness and warmth for a few hours, so some prefer a late-afternoon appointment. Make-up can usually be applied later the same day or the next morning. Strong actives such as retinoids and exfoliating acids are paused for a few days, as advised at your visit, and sun protection is important.
Usually yes, once the initial heat has settled, often later the same day. Choose a gentle, non-irritating product and remove it carefully. If the skin feels sensitive or tight, it is better to wait until the next morning. Mineral sunscreen is a sensible base during the first week.
少女光 is IN Eternity Clinic’s protocol on the DEKA RedTouch Pro, a fractional laser at 675 nm. The key difference is the absorber: most resurfacing lasers rely on water in the skin, while 675 nm is taken up mainly by collagen. That lets the energy work on the dermal collagen framework directly instead of heating the surrounding water.
It addresses four concerns, which is why it suits ongoing maintenance rather than one isolated problem: facial redness, including the vascular side of rosacea; inflammation in acne; enlarged pores and uneven texture; and loss of firmness, through the collagen response that follows fractional treatment.
They differ in depth and target. T2 Frax Radiance acts photoacoustically on pigment. R2 Glow works nearer the surface on inflammation. 少女光 goes further down: at 675 nm it reaches the reticular dermis, about 2 to 3 mm deep, where the collagen framework lies. The three are not interchangeable, since each works on its own layer, and one plan can include more than one.
Energy is delivered fractionally, in tiny zones of heating, while an integrated contact cooling handpiece keeps the epidermis cold. The surface layer is not ablated. How quickly skin settles still differs between people, and this is covered at consultation.
The RedTouch Pro has a scanning mode designed to make treatment possible on darker and tanned skin types. Even so, IN Eternity Clinic assesses every patient in person, as with any laser, because no device suits every person or every skin.
Besides collagen, 675 nm also acts on the vascular component of the dermis, which is why it is used for facial redness and the vascular type of rosacea. Rosacea is long-term and tends to relapse; it is kept under control rather than cleared by a course of treatment. Assessment always comes first.
Yes, though it helps to understand how. Treatments that aim at the pore itself are aiming at the wrong structure. How visible a pore is depends on the collagen and elastic support in the surrounding dermis, and a 675 nm protocol directed at that support addresses the cause, not just the appearance.
Yes — this is one of its most frequent uses at IN Eternity Clinic. Because 675 nm acts on dermal collagen directly, it firms the skin by working on its framework rather than by heating water. It reaches the reticular dermis, around 2 to 3 mm deep. When the goal is lifting at a deeper structural level, focused ultrasound is the better-suited tool, and the two are sometimes combined.
Yes, and maintenance is how it is used most often at IN Eternity Clinic. It works on the collagen framework without ablating the epidermis, so it fits a regular, preventive schedule rather than an intensive corrective course. How often you come in is decided for you individually, not sold as a fixed package.
The built-in cooling handpiece plays a large part in comfort, keeping the skin surface cold while energy is delivered underneath. Most people feel warmth. Sensitivity differs between people and between facial areas, and comfort is adjusted as the session goes on.
How visible a pore is depends mostly on the collagen and elastic tissue around it; when that support weakens, the opening loses its edge and looks larger. A collagen-directed treatment such as the 675 nm 少女光 protocol at IN Eternity Clinic works on that support, not on the pore. Keeping pores free of oil and debris also improves how they look.
Pores appear larger when the collagen and elastic support around the follicular opening weakens, when oil production is high, or when the opening is stretched by trapped sebum and debris. Ageing and sun damage reduce the dermal support that keeps pores defined. Because the underlying factor is usually dermal support, a serious pore treatment is really a collagen treatment.
No treatment shuts a pore for good, but how it looks can be improved by working on the dermal collagen that supports the follicular opening and by keeping the pore clear of oil and debris. At IN Eternity Clinic, the 675 nm 少女光 protocol is directed at that collagen support. What changes, and by how much, varies with skin type and the cause of the enlargement.
Pores do not open and close like a valve; what changes their appearance is the collagen support around them. A protocol directed at dermal collagen, such as the 675 nm 少女光 laser at IN Eternity Clinic, acts on that support. Consistent cleansing and sun protection help maintain the result, since sun damage weakens the same collagen.
Rosacea is a chronic, relapsing condition that is managed rather than cured, so be wary of any promise to clear it for good. Laser directed at the vascular component — such as the 675 nm 少女光 protocol at IN Eternity Clinic — can address facial redness as one contributor, while identifying and avoiding triggers manages the underlying tendency. Assessment comes first, since not all facial redness is rosacea.
Rosacea treatment combines addressing the visible vascular redness with managing the triggers that provoke flares. Laser directed at the vascular component, such as the 675 nm 少女光 protocol at IN Eternity Clinic, can reduce redness as one contributor. Because rosacea is chronic and relapsing, it is managed over time rather than removed in a single course, and assessment distinguishes it from other causes of facial redness.
Most patients describe a warm or light prickling sensation during the 少女光 laser, managed with cooling and adjustable settings. Numbing can be applied where helpful. The sensation passes quickly, and what to expect is explained beforehand at IN Eternity Clinic.
The 少女光 laser is usually delivered as a spaced course so the skin can respond and remodel between sessions. The number depends on your concern and its depth, and is estimated at consultation by Medical Director Dr Sin Yong.
Results from the 少女光 laser build in the weeks after each session as the skin renews, and are commonly maintained with periodic treatment. The interval depends on your skin and concern, and is planned individually.
Pricing for the 少女光 laser depends on what your assessment finds, the areas treated and how the plan is staged, which differ from person to person. Because the plan is tailored, IN Eternity Clinic explains the full plan and cost at consultation rather than a fixed price.
Every treatment is personally performed or directed by Medical Director Dr Sin Yong, tailored to your specific concern for a natural outcome. Consultations are by appointment at 9 Scotts Road, #12-01 Pacific Plaza, Singapore 228210.
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