Who Sofwave suits, and who it does not
Written by the Delight Dermatology editorial team · Medically reviewed by Lead Dermatologist, Delight Dermatology Clinic (Korean Board-Certified Dermatologist, AAD International Fellow, ASLMS) · Last reviewedSofwave suits adults with mild to moderate skin laxity and textural change who want a non-invasive, single-session option and can wait months for the result to develop. It suits people whose problem is dermal: crepey texture, loss of firmness along the jawline and neck, early submental laxity, fine lines. It does not suit people whose laxity is advanced enough that a surgical lift is the honest answer, people expecting fat reduction, or people who need a visible result by a fixed date. Screening at examination covers pregnancy, active infection or open lesions in the treatment area, recent injectables or threads in the area, keloid history, uncontrolled systemic illness and implanted devices. The decisive list is the manufacturer's instructions for use combined with the treating clinician's assessment, not a web page.

Reasonable candidates
- Mild to moderate dermal laxity. The published series enrolled patients with mild-to-moderate laxity, typically from their thirties into their sixties, and that is the population the evidence actually describes.
- Textural change rather than volume loss. Crepey skin, loss of firmness, fine lines and early jawline softening sit in the plane this device treats.
- People who want one session and minimal downtime. Most patients in the reported series returned to usual activity the same day.
- Atrophic acne scarring, in the right hands. A 2025 series in Asian patients reported significant reduction in scar depression volume after a single session, with follow-up to eight months. It is a small, retrospective study, and scarring is treated as its own consultation rather than an add-on.
- Patients who understand the timeline. The change appears over months. Someone comfortable with that is a far better candidate than someone who is not, regardless of how their skin looks.
Poor candidates
- Advanced laxity with significant tissue descent. A device confined to the mid-dermis will under-deliver where the problem is deeper. The appropriate answer is a different modality or a surgical opinion, and being told so is better service than being sold a session.
- Anyone expecting fat reduction or contouring. The energy does not reach the subcutaneous compartment.
- Anyone expecting deep static folds to disappear. The measurable change in the published studies is in firmness, texture and modest fold depression volume, not in erasing established folds.
- Anyone on a deadline. If the wedding is in three weeks, this is the wrong treatment for that timeline.
- Anyone who has been promised a "permanent" result. No published evidence supports permanence for any non-surgical tightening device, and a clinic that says otherwise has told you something useful about itself.
What the examination screens for
These are the categories a dermatologist checks before treating with a heat-delivering device. They are not all absolute bars; several are timing or planning questions.
- Pregnancy and breastfeeding. Elective aesthetic energy treatments are deferred; there is no safety evidence to justify treating.
- Active infection or open lesions in the treatment area. Active herpes simplex, cellulitis, inflamed cystic acne or broken skin means the area is not treated until it settles.
- Recent fillers, threads or other injectables in the area. Heat interacts with implanted material, and threads change the tissue plane. The interval is set by what was placed, how much and when. That is why the treatment history matters more than most patients expect.
- Keloid or hypertrophic scarring history. Any controlled thermal injury is assessed more cautiously in someone who scars abnormally.
- Implanted electronic or metallic devices. Declared and assessed against the manufacturer's instructions for use for the specific device and its location; this is checked rather than assumed either way.
- Uncontrolled systemic illness, autoimmune or connective tissue disease. Wound healing is the mechanism this treatment relies on. If healing is impaired, the premise is weaker.
- Photosensitising medication and recent isotretinoin. Declared so timing can be planned.
- Expectations that do not match the mechanism. The most common reason a treatment disappoints is that it was never going to do what the patient was hoping for. That is a screening question, not a soft one.
Skin type and pigmentation
The published series include Fitzpatrick types II–IV and Asian patient populations, and no post-inflammatory hyperpigmentation was reported in them. That is reassuring but comes from small samples, so pigmentation risk is still discussed individually, particularly for patients with a history of melasma or post-inflammatory pigmentation, where any heat-based treatment warrants a more careful conversation.
Candidacy for microfocused ultrasound is assessed differently. That is covered on the Ultherapy candidacy page.
What happens if you are not a candidate
The examination sometimes concludes that this device is not the right answer. That conclusion is worth more than a treatment that was never going to work, and it is the reason candidacy cannot be settled by messenger before you arrive. Delight Dermatology's protocol and the other options available at the clinic are described on the clinic's Sofwave page. Where the alternative is a different energy device, the comparison page explains how that choice is reasoned through.
Published references
The clinical statements on this page reflect the published literature on synchronous parallel-beam ultrasound of the mid-dermis. Citations below are primary or review sources; PubMed identifiers link to abstracts. Where an author group includes device-manufacturer employees, that affiliation is noted in the entry.
- Gold MH, Biron J. Efficacy and safety of high-intensity, high-frequency, non-focused ultrasound parallel beams for facial skin laxity. Journal of Cosmetic Dermatology. 2024;23(1):117–123. PubMed · doi:10.1111/jocd.16098
- Hongcharu W, Boonchoo K, Gold MH. The efficacy and safety of the high-intensity parallel beam ultrasound device at the depth of 1.5 mm for skin tightening. Journal of Cosmetic Dermatology. 2023;22(5):1488–1494. PubMed · doi:10.1111/jocd.15672
- Boonchoo K, Hongcharu W. The efficacy and safety of a single treatment of high-intensity, high-frequency, non-focused ultrasound parallel beams for facial acne scars in Asian patients: a preliminary study. Journal of Cosmetic Dermatology. 2025;24(4):e70134. PubMed · doi:10.1111/jocd.70134
- Liao D, Prasad A, Bloom JD. Use of ultrasound in face and neck rejuvenation. Facial Plastic Surgery. 2026 (online ahead of print). PubMed · doi:10.1055/a-2854-6601