If you've spent any time researching Korean skincare beyond your bathroom shelf, you've probably run into names like Rejuran, laser toning, Pico toning, and Lhala peels. These are clinic treatments, not products, and they represent a different category of skin investment than anything you can buy in a bottle. Here's what each one actually is, in plain terms, from a licensed esthetician's perspective.
Rejuran: The Salmon DNA Skin Booster
Rejuran is an injectable treatment that uses polynucleotides, fragments of salmon DNA, to stimulate the skin's own repair and regeneration processes. It's injected in a series of small, shallow injections across the treatment area, similar to a skin booster rather than a filler. Unlike hyaluronic acid fillers, Rejuran doesn't add volume in the traditional sense. Instead, it signals the skin to repair itself: improving elasticity, calming inflammation, and gradually improving overall skin quality and texture over a series of sessions.
It's become one of the most talked-about treatments to come out of Seoul's clinic scene, largely because the results build cumulatively rather than fading like a filler would. Most protocols involve multiple sessions spaced several weeks apart.
Laser Toning (Titanium Laser)
Laser toning refers to a category of low-fluence laser treatments, often performed with devices like a Titanium laser, that target pigment and redness beneath the skin's surface without the intense downtime of more aggressive resurfacing lasers. The laser passes over the skin in multiple gentle passes, breaking down pigment clusters and stimulating collagen production along the way.
This is a favorite in Korean dermatology and medi-spa clinics specifically because it can be done with minimal to no visible downtime, making it appealing for people who want cumulative brightening and tone-evening results without disappearing from daily life for a week.
Pico Toning
Pico toning uses picosecond laser technology, meaning the laser delivers energy in ultra-short pulses measured in trillionths of a second. This shorter pulse duration allows the laser to shatter pigment and target skin concerns with less heat transfer to surrounding tissue than older laser technologies, which generally means less irritation and faster recovery.
Pico toning is frequently used for overall skin brightening, pore refinement, and addressing stubborn pigmentation, and it's often layered into a broader clinic visit alongside other treatments like Rejuran or a peel.
The Lhala Peel
Lhala peels use lactobionic acid and other gentle acid blends to resurface the skin without the aggressive peeling associated with older-generation chemical peels. This class of peel is designed to smooth texture, brighten tone, and support cell turnover while being gentle enough for regular use in a clinic setting, often paired with other in-office treatments during the same visit.
Why These Treatments Are Different From What You Can Do at Home
The honest answer is that clinic treatments like these work on a different timescale and through different mechanisms than even the best at-home routine. Rejuran works at the level of cellular signaling. Laser and Pico toning work by targeting pigment beneath the surface with light energy. A well-formulated at-home routine, the kind I build for my own clients, is what maintains and extends those results between visits and what your skin needs on the days you're not in a treatment chair.
That's actually the relationship I think about most as both an esthetician and someone who seeks out these treatments myself in Seoul: the clinic work creates the shift, and the right at-home routine, especially barrier support and gentle resurfacing, protects and extends it. If you've had any of these treatments recently, or you're supporting reactive, post-procedure skin in general, my KRX Cica Recovery Bundle and Barrier Repair Recovery Mask are the exact products I reach for and recommend for calming and rebuilding skin after in-office treatments.
I'll be sharing my own experience with these treatments from my trips to Seoul soon, including what the appointments actually felt like and what I'd tell a friend before booking. For now, if you have questions about how to prepare your skin for a clinic visit or how to care for it afterward, reach out or book a consult.
0 comments