12 Nov LDM After Laser and RF Microneedling: How Ultrasound Supports Skin Recovery
By Dr Rachel Ho | Aesthetic Doctor, Founder, The Skin Longevity Clinic, Singapore
Medically reviewed by Dr Rachel Ho, MBBS, MRCS, MMed (ENT), 12 November 2026.
Dr Rachel Ho is an aesthetic doctor and the founder of The Skin Longevity Clinic. She holds an MBBS from the National University of Singapore, the MRCS (Edinburgh) and a Master of Medicine, with more than 16 years of clinical experience spanning facial reconstructive surgery and aesthetic medicine. Her work has been featured in Vogue Singapore, Harper’s Bazaar, CNA Lifestyle and The Straits Times. She also writes about skincare science at drrachelho.com.
After a laser, RF microneedling or a chemical peel, skin often feels hot, tight and red for a few days. LDM (Local Dynamic Micro-massage) is a gentle ultrasound treatment that can be added during this recovery window. It does not heat or wound the skin. This guide covers what LDM does after a procedure, which treatments it pairs with, and when it should wait. For the full treatment overview, see LDM treatment in Singapore.
LDM after a procedure is a recovery step. It does not replace the procedure.
What LDM does for skin after laser and RF microneedling
LDM sends quickly alternating ultrasound waves into the skin. The effect is mechanical, a micro-massage of the tissue, not heat.
- In a blinded multicentre study, 24 patients had daily LDM for 5 days after nose surgery, and 24 used ice packs. Swelling lasted 1.9 days with LDM against 4.5 days with ice. Bruising lasted 2.8 days against 7.4 days (Ahn 2024).
- The device’s developer describes very-high-frequency ultrasound as a pre- and post-treatment add-on to laser, radiofrequency and injections (Kruglikov 2015).
- Lab studies show ultrasound switches on repair signals in skin fibroblasts (Lee 2021) and raises collagen production in cultured skin cells (Bohari 2015).
The best human data is for swelling and bruising after surgery. There are no published trials of LDM after laser yet.
LDM after RF microneedling
RF microneedling makes tiny channels and heats the deeper skin. Redness and swelling usually settle over a few days. LDM can be added once the channels have closed and the skin has been checked. It is used for comfort, swelling and hydration while the skin settles. See radiofrequency microneedling in Singapore.
LDM after pico laser, CO2 laser and other lasers
| Procedure | Typical skin after treatment | Where LDM fits |
|---|---|---|
| Pico laser | Mild redness, warmth for hours to a day | Same day or the next visits, for calming and hydration |
| Fractional CO2 laser | Open micro-wounds, crusting, several days of redness | Only after the surface has healed and the doctor clears it |
| Secret DUO erbium glass laser | Redness and swelling for 1–3 days | Once the skin has been checked, for comfort and swelling |
| Chemical peel | Tightness, flaking | After peeling settles, for barrier support |
| Skin boosters and injectables | Small bumps, swelling, bruising | The doctor decides timing, so that product placement is not disturbed |
The timing depends on how deep the procedure went. Open or crusted skin is not treated.
LDM after laser in Korea and Singapore
Many Korean clinics add LDM straight after lasers, RF and boosters as a routine “recovery” step. Here, LDM is added when the skin needs it: for redness, heat, tightness or swelling, or for patients with sensitive skin or a history of pigmentation after procedures. It is not a default add-on.
Who should wait before LDM after a procedure
- Open wounds, crusting or weeping skin
- Signs of infection or a cold sore flare
- Burns or blisters after a laser
- Filler or a skin booster placed in the last few days, unless the doctor says otherwise
- Pregnancy: tell the clinic first
What to expect at a post-procedure LDM session
- The skin is checked for open areas and irritation.
- A gel is applied, and the handpiece glides over the face with a light massage feel and no heat.
- Soothing products and sunscreen go on afterwards.
- Keep skincare simple: a gentle cleanser, moisturiser and sunscreen. No acids or retinoids until the doctor says so.
Other recovery tools used at the clinic include LED light treatments.
FAQs: LDM after laser and RF microneedling
Can I do LDM on the same day as RF microneedling?
It depends on how deep the treatment went and how the skin looks afterwards. Light treatments can sometimes be followed the same day. Deeper ones wait until the micro-channels have closed. The doctor decides on the day.
Does LDM reduce redness after laser?
LDM is used for comfort and calming after laser. In acne and rosacea patients, a 4-week course of dual-frequency ultrasound lowered measured redness (Kim 2021). No trial has yet measured redness after laser.
Does LDM help swelling and bruising after a procedure?
After nose surgery, LDM shortened swelling from 4.5 to 1.9 days and bruising from 7.4 to 2.8 days compared with ice packs (Ahn 2024).
Is LDM safe after pico laser?
Yes, once the skin has been checked. LDM does not heat the skin and does not add to laser energy.
Can LDM be done after fillers or skin boosters?
The timing is set by the doctor so that the product is not displaced. Many patients wait a few days.
How many LDM sessions do I need after a procedure?
Usually one to a few sessions in the first one to two weeks, depending on the procedure and how quickly the skin settles.
LDM assessments take place at Scotts Medical Center, 9 Scotts Road. Appointments can be booked through the contact page or by calling +65 6514 2688.
References
Show all 5 references
- Ahn TH, et al. Application of dual-frequency ultrasound for reduction of perilesional edema and ecchymosis after rhinoseptoplasty. J Cosmet Dermatol. 2024;23(3):830-838. doi:10.1111/jocd.16040 (PMID 37877460) https://doi.org/10.1111/jocd.16040
- Kruglikov I. Very high frequency ultrasound: new therapeutic method in aesthetic medicine and dermatology. Hautarzt. 2015;66(11):829-33. doi:10.1007/s00105-015-3676-z (PMID 26347129) https://doi.org/10.1007/s00105-015-3676-z
- Lee JY, et al. Non-pharmacological high-intensity ultrasound treatment of human dermal fibroblasts to accelerate wound healing. Sci Rep. 2021. doi:10.1038/s41598-021-81878-1 https://doi.org/10.1038/s41598-021-81878-1
- Bohari SPM, et al. Pulsed low-intensity ultrasound increases proliferation and extracellular matrix production by human dermal fibroblasts in three-dimensional culture. J Tissue Eng. 2015. doi:10.1177/2041731415615777 https://doi.org/10.1177/2041731415615777
- Kim YJ, et al. The efficacy and safety of dual-frequency ultrasound for improving skin hydration and erythema in patients with rosacea and acne. J Clin Med. 2021;10(4):834. doi:10.3390/jcm10040834 (PMID 33670631) https://doi.org/10.3390/jcm10040834