
Son Yeon-jae / Captured from YouTube
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Looking radiant and refreshed on a spring shopping spree, former rhythmic gymnast Son Yeon-jae has unveiled her experience with dermatological procedures in a YouTube update.
Taking some time off from child care, a key theme of her YouTube channel, Son said, “Doesn’t my face look different? I got Ultherapy. Since I’m planning to get pregnant with my second child, I thought I should do it now. I won’t be able to do it again for about two years, and skin damage doesn’t easily recover during that time, so I took care of everything in advance. I also did toning.”
“I lost a lot of weight and my cheeks became hollow, so I tried something called Juvelook for the first time. Doesn’t it look okay?” She added. “Now that I'm in my 30s, going to a dermatologist is kind of necessary. I try to avoid Botox as much as possible. I once got it for nasolabial folds, but I had a reaction like an allergy. For something like smile lines, I think it’s fine to just live with them.”
Ultherapy: Effective for skin lifting
Ultherapy uses high-intensity focused ultrasound to deliver energy deep into the skin, stimulating elasticity. By creating thermal coagulation points in the superficial muscular aponeurotic system layer, the tissue contracts instantly and gradually regenerates, producing a lifting effect.
It can improve sagging in areas like the jawline, cheeks and around the eyes. Results vary depending on skin thickness and degree of sagging. Because it uses strong ultrasound energy, some pain may occur during the procedure, and in rare cases, fat atrophy may lead to hollowing of the cheeks.
Juvelook boosts collagen production
Juvelook is a skin booster treatment based on the polymer polydioxanone. Fine particles are injected into the dermis to stimulate collagen production.
Over time, it can help reduce fine lines, shrink pores and improve skin elasticity. Possible side effects include bruising, swelling and temporary unevenness at injection sites. In rare cases, inflammation or nodules may form, so proper injection depth is crucial. Patients should avoid touching or pressing the treated area after the procedure.

Son Yeon-jae / Captured from YouTube
Laser toning: Good for dark spots
Laser toning uses low-energy laser treatments repeatedly to gradually break down melanin pigments. It is commonly used for melasma, freckles and pigmentation issues, with effects building over multiple sessions.
However, if the intensity is too strong, it may cause hypopigmentation (whitening) or worsen melasma. Repeated treatments on already sensitive skin can lead to redness, dryness and increased sensitivity, so sun protection and hydration are essential.
Botox reduces expression wrinkles
Botox involves injecting botulinum toxin to block nerve signals to muscles, reducing muscle contraction. This helps smooth wrinkles on the forehead, between the eyebrows, and around the eyes, and can also slim the jawline.
Effects typically appear within 3-7 days and last about 3-6 months. Side effects may include bruising or pain at the injection site. If not administered precisely, it can cause drooping eyelids, asymmetry, or speech issues.
As with Son’s case, reactions after Botox can sometimes resemble allergies, but they are often temporary responses to the injection. However, if symptoms go beyond hives and redness — such as difficulty breathing, dizziness, or severe swelling — immediate medical attention is necessary.
This article from Kormedi.com, Korea’s top health care and medical portal, is translated by a generative AI system and edited by The Korea Times.