Re2O (Elravie Re2O): Questions and Answers

Re2O, sold as Elravie Re2O, is an injectable skin booster developed in Korea by L&C Bio, a company that works with human tissue products. It is made from donated human skin that has been processed to remove its cells, leaving the dermal matrix, which is then broken into fine particles for injection. It is aimed at skin quality, such as fine lines, texture, dryness and thin skin, rather than at lifting or changing the shape of the face.

hADM stands for human acellular dermal matrix. The dermis is the thick inner layer of the skin, and its framework between the cells is called the extracellular matrix, made mainly of collagen, elastin and other structural molecules such as hyaluronic acid. Acellular means the cells have been removed in processing, leaving that framework. In Re2O the matrix is particulated, broken into very fine pieces, so it can be injected into the skin.

Most skin boosters add one kind of ingredient: hyaluronic acid to hold water, polynucleotides to support the skin's repair environment, or synthetic particles that trigger collagen. In his column, Dr. Kim describes Re2O as a different kind of booster: rather than adding a single ingredient, it supplies finely processed hADM, the same structural material that makes up the skin's own support. The aim is to support the dermis directly. How much it does so, and for how long, is still being studied.

Re2O is made by L&C Bio, a Korean company known for human tissue products used in medicine, and Elravie is the name under which it is sold. The company's background is in processed donor tissue used in surgery, and Re2O applies the same kind of material in an injectable form for the skin. Knowing the maker matters because human tissue products are regulated differently from synthetic fillers and boosters.

No. It is used as a skin booster, injected in small amounts across the skin to improve its quality, not to add shape or volume to a specific feature. It does not lift a cheek or fill a deep fold the way a volumizing filler does. Some people notice that thin areas look slightly fuller as skin quality improves, but if you want clear volume or contour change, other treatments are designed for that.

Not exactly. Older collagen injections used purified collagen, often from animal sources, as a temporary filler. Re2O uses a processed human dermal matrix that contains collagen together with other components of the skin's framework, such as elastin and hyaluronic acid, and it is used to support skin quality rather than to fill. The aim and the material are different, even though both involve collagen in some form.

No. Sculptra contains poly-L-lactic acid, a synthetic material that prompts the body to build its own collagen around the particles over months, and it is used mainly to restore volume and support. Re2O supplies human-derived matrix directly into the skin and is aimed at skin quality. They work by different mechanisms and solve different problems: Sculptra for lost volume, Re2O for thin, tired-looking skin.

Sheets of processed donor dermis have been used for years in reconstructive surgery, for example to support tissue in breast reconstruction and in some wound and soft-tissue repairs. Surgeons use it as a scaffold that the body's own cells grow into. Re2O applies the same kind of material, broken into fine particles, to the skin. The long surgical history is reassuring about the material, but the injectable form for skin quality is much newer.

Skin booster is a general term for injectables placed in the skin to improve hydration, texture or quality, rather than to add shape. Re2O fits that description because it is injected in small amounts across an area to support the dermis. The term is a convenient category rather than a precise medical definition, and products called boosters can work in very different ways. What matters is what is in the product and what it is meant to do.

In his column, Dr. Kim lists the people Re2O tends to suit: those with fine lines and a general loss of elasticity, enlarged pores or an uneven balance of oil and moisture, dry and rough texture, hollowing under the eyes, along the smile lines or at the side of the cheeks in people who would rather avoid surgery or filler, and people who want to look after their skin before aging changes become marked. Each of these is a skin-quality concern rather than sagging.

Re2O is injected into the skin in small amounts across the treatment area, with fine needles or a cannula, after the skin has been cleansed and numbed. The injector chooses the depth and the spacing of injection points for the area and the skin's thickness. The aim is even placement within the skin rather than shaping a feature. Small raised bumps at the injection points are expected and usually settle within the day.

According to Dr. Kim's column, the injection itself takes roughly ten minutes. Numbing cream applied beforehand adds time, and the full visit is longer if Re2O is combined with a device such as Thermage or Ulthera. A short session makes it practical to add to other treatments or fit into a busy schedule, including a short visit to Seoul. Ask the clinic for an estimate of the whole appointment.

Most people feel small pricks and some pressure as the product is injected. In his column, Dr. Kim writes that numbing cream is usually enough. Thinner and more sensitive areas, such as under the eyes, can feel more uncomfortable. The session is short, which helps. Tell the injector if something feels sharper than expected, so the technique or pace can be adjusted. Any soreness afterwards is usually mild and fades within a day or so.

Dr. Kim writes that one session can already help, and that around three sessions spaced three to four weeks apart give a fuller effect. The actual number depends on how your skin responds, your concerns and your schedule. It is reasonable to see how your skin reacts after the first session before committing to more. The course is decided by the skin's response rather than by a fixed package.

In his column, Dr. Kim describes sessions about three to four weeks apart. That interval gives the skin time to respond and lets any bumps and swelling settle fully before the next session. If you are visiting Seoul for a limited time, ask whether the course can fit your travel dates, or whether one session now and further sessions later makes more sense. The spacing is adjusted to how your skin responds.

Usually little. Dr. Kim writes that the slight raised bumps and redness after injection mostly disappear on the same day. Some people have mild swelling or a small bruise for a few days. Most people return to normal activities straight away. If you have an important event, allow a few days in case of bruising, especially if Re2O is combined with a device treatment in the same visit.

In his column, Dr. Kim advises no makeup on the day of treatment. Waiting until the next day lets the injection points close and lowers the chance of irritation or infection. When you start again, use clean brushes and products. If bumps or redness remain, apply makeup gently and avoid pressing on the injected areas. Follow any specific advice from the clinic for your skin.

Dr. Kim's column advises avoiding alcohol, saunas and smoking for about a week after treatment, and makeup on the day itself. Avoiding heavy exercise for a day or two and not rubbing or massaging the injected areas is also sensible. Gentle cleansing, moisturizer and sun protection are fine. Increasing pain, warmth or redness in the days after treatment should be reported to the clinic.

Re2O is mainly used on the face for skin quality: the cheeks, the area under the eyes, along the smile lines and at the side of the cheeks, where thin or crepey skin and fine lines are common. The neck is sometimes considered for crepey skin. Injections near the eyes need particular care with depth and technique. The areas are chosen from your specific concerns, not a fixed map.

Allow enough time for the course you want and for any bruising to fade. Bumps and redness usually settle within the day, but a small bruise can take a week or so to clear. If you want the fuller effect Dr. Kim describes from around three sessions three to four weeks apart, start about two to three months ahead. Avoid having a first-ever session just before the event, when you do not yet know how your skin reacts.

In his column, Dr. Kim lists hollowing under the eyes among the concerns Re2O may suit, for people who would rather avoid surgery or filler. The skin under the eyes is very thin, so the injector's technique and depth matter more there than almost anywhere else on the face. Not every under-eye problem is a skin problem: fat bags and deep hollows need other approaches. An examination comes first.

In his column, Dr. Kim notes that Re2O can be used alone, but that it is often paired with focused ultrasound such as Ulthera or with radiofrequency such as Thermage. The device works on lifting and firmness, while Re2O works on the quality and structure of the dermis. Combining them means two layers, or two aspects of the same layer, are treated in one plan, rather than expecting one tool to do everything.

Yes. When done on the same day, the device treatment is commonly performed first and the injections afterwards, so the injected material is not heated or pressed by the treatment tip and the injection bumps do not interfere with even contact. Separate visits may be preferred for sensitive skin, to see how the skin reacts to each, or to limit visible bumps before an event. See Can Thermage and Re2O be done on the same day?

Yes. Dr. Kim mentions focused ultrasound such as Ulthera among the devices Re2O is often combined with, so that lifting of the deeper support and repair of the dermis are addressed together. Ulthera works on the SMAS and fat at set depths, while Re2O works within the skin. As with Thermage, the device treatment is usually done first when both are given in one visit.

On the same day, the device is usually first and Re2O second. Injected material should not be heated by the device or pressed by the treatment tip, and raised bumps from injection can get in the way of even contact. When treatments are on separate days, either order can work, and the spacing depends on how your skin reacts. The clinic decides the sequence for your plan.

Yes. Muscle-relaxing injections soften lines caused by movement, while Re2O works on the quality of the skin. They address different causes and are often used in the same plan. They can be given at the same visit or separately. Avoid rubbing or massaging the injected areas afterwards, and tell the clinic about all injections you have had recently so the plan accounts for them.

It can be planned alongside filler, but the two do different jobs. Filler adds volume or shape to a specific area, while Re2O improves skin quality across an area. Dr. Kim lists Re2O as an option for people with hollowing who would rather avoid filler, which shows they are alternatives in some cases and partners in others. Tell the clinic about filler already in the areas to be treated.

They work differently. Rejuran is a polynucleotide booster, made from DNA fragments, often from salmon, thought to support the skin's repair environment. Re2O supplies human acellular dermal matrix directly to the skin. Both aim at skin quality, and head-to-head comparisons are limited, so neither can be called better in general. A fuller comparison is in Re2O, Rejuran and other skin boosters: how do they differ?

Often yes, with spacing that depends on the laser. After a gentle laser, a short gap may be enough; after a stronger resurfacing laser, the skin needs time to heal before injections. Injecting into skin that is irritated or broken increases the risk of infection. Tell the clinic what laser you had, when, and how your skin reacted, so the timing can be planned. Some clinics plan lasers and boosters in a set order within a course, so ask how they fit together.

It is better to wait. Massaging or pressing on freshly injected areas can move the product and irritate the injection points, and steaming or heat treatments in a facial work against the advice to avoid saunas for about a week. Gentle cleansing at home is fine. Ask the clinic when it is safe to resume facials and massage, usually after the first week. Facial devices used at home, such as heated or microcurrent tools, are best paused for the same period.

By identifying which aspect of the skin and face has changed. Loose, less firm skin points toward a firming treatment such as Thermage; thin, dry, crepey or dull skin points toward a skin-quality treatment such as Re2O; many people have both. Deeper sagging or volume loss calls for other treatments. Dr. Kim writes that lifting should start by looking at every layer to find the cause, and the choice follows from that examination.