Mokotów Clinic:
al. Niepodległości 92/98
City Centre Clinic:
ul. Świętokrzyska 30
01 — Body Contouring · Anti-Cellulite · Skin Firming

Onda Coolwaves™

Reduction of fatty tissue and cellulite, plus skin firming — with cold Coolwaves™ microwaves, at Velvet Skin Clinic in Warszawa. Even a single session brings a visible effect.

Coolwaves 2.45 GHz microwavesselective action on fat
3 levelsfat · cellulite · skin
Visible from session 1no downtime
2 clinicsCity Centre · Mokotów
02 — About the Treatment

Coolwaves Microwaves — fat and cellulite reduction, plus skin firming

Onda Coolwaves is a unique technology using Coolwaves microwave energy with skin cooling. Working on 3 levels — fatty tissue, cellulite and skin — the waves quickly and effectively slim the abdomen and waist, reduce thigh circumference, target outer thighs, contour the arms and back, and firm the skin while smoothing cellulite. Even a single session brings a visible effect.

See details

Coolwaves Microwave Technology

The technology built into the Onda device uses unique Coolwaves microwaves that selectively reach fatty tissue and reduce it non-invasively. Coolwaves act precisely on fat cells without affecting the surrounding tissue, safely and comfortably for the patient. The waves work on 3 levels: on fatty tissue (breaking down and removing cells through the body's natural metabolic processes), on cellulite (the shallow handpiece breaks down fibrous bands) and on the skin (contracting collagen fibres and stimulating new collagen).

2 treatment handpieces

Shallow-action handpiece — for skin firming and treating shallow cellulite: concentrated waves warm the dermis, collagen fibres contract, giving immediate skin tightening and breaking down subcutaneous fibrous bands. Deep-action handpiece — for reducing fatty tissue and deep cellulite: around 80% of the 2.45 GHz wave energy concentrates in fatty tissue, heating it and triggering lipolysis — permanent damage to fat cells, which are then removed through the body's natural metabolic processes.

Onda Coolwaves — body-contouring treatment at Velvet Skin Clinic Warszawa
03 — Onda Coolwaves in NumbersVelvet Skin Clinic Experience
4 069Onda Coolwaves sessions performed (2020–2026)
977clients trusted Onda Coolwaves at VSC
72%return for another course of treatment
2clinics in central Warszawa

Onda Coolwaves is one of our most popular body-contouring treatments — we tailor the therapy individually to the area and goal.

Source: Versum and Booksy reports, as of 30 June 2026.

04 — Three Levels of Action

One technology, triple effect

01

Fatty tissue

The microwaves act deeply and precisely on fat-cell membranes, breaking them down and removing them from the body through natural metabolic processes.

02

Cellulite

The shallow-action handpiece effectively breaks down cellulite — both water-based and fibrous.

03

Skin

The microwaves contract collagen fibres and stimulate new collagen production, resulting in firmer, more youthful-looking skin.

05 — Indications

When It's Worth Choosing Onda

fat tissue reductioncellulite reduction body contouring and slimmingimproved skin tone and firmness abdomen and waistthighs and outer thighsarmsback
What We Help With

What Onda Coolwaves can help with

We use this treatment for 5 indications. It works a little differently for each one — below we explain exactly what it does in each case.

Not sure which indication matches your situation? See all indications or ask during your consultation.

06 — Invitation

Not sure if Onda is right for you? Book a consultation and we'll tailor the therapy together.

Book a consultation
07 — Scientific Research

Microwave Efficacy Confirmed by Research

Below are peer-reviewed studies on the microwave technology (Coolwaves) behind Onda (PubMed).

About Onda Coolwaves

Expert Recommendations

An international panel of experts described the use of the Onda Coolwaves device in treating cellulite and localised fatty tissue.

Hoffmann K et al., Bioengineering 2024;11(12):1249. PubMed →
Microwaves · cellulite

Cellulite Therapy

The study confirms the efficacy of microwave therapy as a non-invasive method for reducing cellulite.

Bennardo L et al., J Clin Med 2022;11(3):515. PubMed →
Microwaves · fat + skin

Fat and Skin Tone

A non-invasive microwave system reduces unwanted fatty tissue and improves skin tone — clinical evidence.

Salsi B, Fusco I, J Cosmet Dermatol 2022;21(11):5657–5664. PubMed →

The studies above relate to Coolwaves microwave technology; the Hoffmann et al. paper refers directly to the Onda Coolwaves device. The number of sessions and the result depend on the severity of cellulite, the amount of fatty tissue and lifestyle — a full course of treatment gives the best results.

08 — Procedure and Number of Sessions

What an Onda Treatment Looks Like

The very first session brings visible results, but depending on the severity of cellulite, a full course of treatment may consist of4 to 6 sessions performed every 2–3 weeks. The session lasts around 45 minutes and requires no downtime.

Consultation and Assessment

Ruling out contraindications and confirming the treatment area and goal.

Shallow Handpiece

Firming loose skin and breaking down shallow cellulite.

Deep Handpiece

Breaking down fat cells and treating deep cellulite.

A Course of 4–6 Sessions

Every 2–3 weeks, until the desired body contour is achieved.

See the Full Procedure

Before the session, a detailed health assessment is carried out to rule out contraindications. The patient then lies down, and a conductive gel is applied to the treatment area to carry the Coolwaves energy deep into the tissue. The first part of the session uses the shallow handpiece (firming loose skin), the second applies the deep waves (breaking down fat cells and treating cellulite). The session is comfortable and safe thanks to the built-in cooling system. Immediately after the session, the fatty tissue becomes soft and loosened. The treatment requires no downtime — patients return to daily activities straight away.

Results: reduction of localised fatty tissue (smaller circumferences), improvement of both water-based and fibrous cellulite, and firmer skin thanks to the waves' effect on collagen and fibroblasts.

09 — Aftercare

Aftercare Advice Onda Coolwaves

Onda Coolwaves requires no downtime — you return to daily activities straight away. A few simple habits help strengthen and prolong the contouring effect.

Hydration

Drink around 1.5–2 litres of water a day for a few days — this supports the lymphatic system in clearing the by-products of fat breakdown.

Movement and Activity

Light activity (such as walking) supports drainage and the contouring effect; follow your specialist's guidance for more intense exercise.

Balanced Diet

Maintaining a calorie balance helps sustain the result and limits fat storage elsewhere.

Skin Reaction

Temporary redness or warmth in the treated area subsides on its own. No downtime.

Stick to the Course

Results build up over the following weeks — a full course of 4–6 sessions gives the best outcome.

Informational and educational material. Detailed recommendations are given by the specialist during your visit; results and healing vary between individuals.

12 — Gallery · Clinic and Treatment

See the Clinic and the Procedure — the Onda Coolwaves Treatment

Real photos from our Velvet Skin Clinic locations in Warszawa (Świętokrzyska — City Centre, Niepodległości — Mokotów).

Onda Coolwaves — body-contouring treatment at Velvet Skin Clinic Warszawa
Onda Coolwaves treatment — body contouring.
Onda Coolwaves — body-contouring treatment on the thigh, cellulite reduction, Velvet Skin Clinic Warszawa
Onda Coolwaves — thigh contouring and cellulite reduction.
The Onda Coolwaves device (DEKA) for non-invasive body contouring
The Onda Coolwaves device (DEKA).
Onda Coolwaves — body-contouring treatment on the abdomen, Velvet Skin Clinic Warszawa
Onda Coolwaves — abdomen contouring.
13 — Pricing and Key Facts

Onda Coolwaves — Pricing

The price depends on the area and the number of sessions; a full course or a body-contouring programme gives the best results. You'll find the full price list on a separate page.

Key facts

Performed by
Cosmetologist
Duration
45 min
Number of sessions
4–6
Price
from 700 zł
14 — Combination Therapies and Alternatives

See Also

Programme

Slim Body

Body contouring as a package — Onda combined with endermology, acoustic wave therapy and carboxytherapy, monitored with InBody.

See the programme
Alternative

Cooltech cryolipolysis

Freezing stubborn fatty tissue with cold (-8°C) — a good option for larger, localised fat deposits.

See Cooltech
Complement

Endermologia LPG

Vacuum massage: drainage, firming and cellulite — a great complement to the microwave treatment.

See endermology
15 — Patient ReviewsTrusted by Our Patients
★★★★★

„Great Fotona 6D laser treatment — my skin is firmer, tone is more even, and I had a real 'glow' about a week after the treatment. (translated from Polish)"

Malgorzata · 2024review from Booksy
★★★★★

„Such a lovely, beautifully performed treatment. Wiktoria is great and good company throughout. Treatments done perfectly. (translated from Polish)"

Julia · 2025review from Booksy
★★★★★

„I'd really like to recommend Iwona — after just one Onda session my love handles are smooth, and so are my buttocks. (translated from Polish)"

Ewa · 2024review from Booksy
16 — Safety

Contraindications for the Treatment

We assess every case individually during the consultation. The main contraindications are:

pregnancy and breastfeeding
cardiac pacemaker
uncontrolled diabetes
cardiovascular and venous disease
kidney or liver failure
cancer
17 — Frequently Asked Questions

Frequently Asked Questions About Onda Coolwaves

Is the Onda Coolwaves treatment painful?

The Onda treatment is comfortable, not painful. Coolwaves microwaves act precisely on fatty tissue, while the built-in cooling system protects the skin. You'll feel warmth during the session; afterwards the tissue feels soft and relaxed, with no downtime — you can return to your daily activities straight away.

How many Onda sessions do I need, and how often?

The first session already gives a visible effect, but a full course is usually 4–6 sessions every 2–3 weeks. The number depends on the severity of cellulite and the amount of fatty tissue. We plan your course at the consultation, ideally with a circumference measurement.

What does Onda Coolwaves treat?

Onda works on three levels at once: it reduces localised fatty tissue, smooths cellulite (both water-based and fibrous) and firms the skin by stimulating collagen. It's a body-contouring treatment for the abdomen, waist, thighs, outer thighs, arms and back.

How does Onda Coolwaves differ from Cooltech cryolipolysis?

Onda uses microwaves that heat and break down fat cells while also firming the skin and smoothing cellulite. Cooltech cryolipolysis freezes fat with cold (-8°C). Onda tends to show results faster and also cares for the skin; Cooltech is often chosen for larger, stubborn fat deposits. We'll help you choose the best method at your consultation.

Does Onda help with cellulite?

Yes. The shallow handpiece breaks down the subcutaneous fibrous bands responsible for shallow cellulite and firms the skin, while the deep handpiece reduces fibrous cellulite together with fatty tissue. Peer-reviewed studies confirm the effectiveness of microwave therapy for cellulite.

Does Onda firm the skin?

Yes. The microwaves contract collagen fibres and stimulate fibroblasts to produce new collagen, giving immediate tightening and a gradual improvement in skin density and firmness — including after fat reduction.

When will I see results from Onda?

The loosening and softening of fatty tissue can be felt right after the session, while the reduction in circumference and improved firmness build up over the following weeks, as the broken-down fat cells are cleared through the body's natural metabolic processes. The full effect shows after a course of 4–6 sessions.

Is the Onda treatment safe?

Yes. Coolwaves microwaves act selectively on fatty tissue without affecting the surrounding tissue, and the cooling system protects the epidermis. The treatment is non-invasive and requires no downtime. Every visit begins with a consultation to rule out contraindications.

How much does an Onda Coolwaves treatment cost?

The price starts from 700 zł per session and depends on the area and the number of sessions in the course. A course of 4–6 sessions or a contouring programme gives the best results. We'll confirm the full price list and course pricing at your consultation.

Does Onda replace weight loss?

No. Onda reduces localised, stubborn fatty tissue and contours the body, but it isn't a treatment for obesity. The best results come with a balanced diet, good hydration and physical activity, which support the clearance of broken-down fat cells.

Onda or endermology — which should I choose?

Endermology LPG is a mechanical vacuum massage (drainage, firming, cellulite), while Onda uses microwaves to break down fatty tissue and firm the skin. We often combine them in body-contouring programmes — the choice depends on your goal, which we'll define at the consultation.

What are the contraindications for the Onda treatment?

The main contraindications are pregnancy and breastfeeding, a cardiac pacemaker, uncontrolled diabetes, cardiovascular and venous disease, kidney or liver failure, and cancer. We assess every case individually during the health consultation.

18 — Who Performs the Treatment

The Treatment Is Performed by Our Cosmetologists

Onda Coolwaves treatments at Velvet Skin Clinic are performed by certified cosmetologists experienced in laser therapy and body-contouring treatments.

Małgorzata Wołyńska — Cosmetologist, MSc, Velvet Skin Clinic
Małgorzata WołyńskaCosmetologist, MScLaser therapy, laser hair removal, body contouring, anti-ageing
Edyta Osowska — Cosmetologist, MSc, Velvet Skin Clinic
Edyta OsowskaCosmetologist, MScInjectable treatments, anti-ageing therapies
Wiktoria Gregorczyk — Certified Cosmetologist, Velvet Skin Clinic
Wiktoria GregorczykCertified CosmetologistLaser therapy, body contouring, laser hair removal
Julia Kononowicz — Certified Cosmetologist, Velvet Skin Clinic
Julia KononowiczCertified CosmetologistLaser therapy, injectable treatments — over 10 years of experience
Kamila Rybak — Cosmetologist, MSc, Velvet Skin Clinic
Kamila RybakCosmetologist, MScHi-tech technologies, body contouring
Paulina Maruszewska — Cosmetologist, MSc, Velvet Skin Clinic
Paulina MaruszewskaCosmetologist, MScHi-tech face and body procedures, body contouring
Olga Kucińska — Cosmetologist, MSc, Velvet Skin Clinic
Olga KucińskaCosmetologist, MScLasers, HIFU, needle mesotherapy, trichology — at the clinic since 2011
Joanna Kondratczyk — Cosmetologist, MSc, Trichologist, Velvet Skin Clinic
Joanna KondratczykCosmetologist, MSc, TrichologistLaser hair removal, laser therapy, trichology

Meet the full Velvet Skin Clinic team →

19 — Booking

Book your treatment Onda Coolwaves

City Centre Clinic

ul. Świętokrzyska 30

00-116 Warszawa · opposite the Palace of Culture and Science
tel. 500 53 30 30

Mokotów Clinic

al. Niepodległości 92/98

02-585 Warszawa · the heart of Mokotów
tel. 500 53 30 55

Choose an option — the calendar will open directly on it

✨✨ Onda Coolwaves Body Contouring
1 area 15x15cm (2 handpiece applications)45 min
Świętokrzyska · —Niepodległości · 600 zł
1 single body area (2 handpiece applications), e.g. chin or central abdomen45 min
Świętokrzyska · 600 złNiepodległości · —
chin40 min
Świętokrzyska · —Niepodległości · 600 zł
1 body zone, both sides (2 x 2 handpiece applications)1 hr
800 zł
hips / love handles1 hr
800 zł
thighs - outer thighs1 hr
800 zł
thighs - front1 hr
800 zł
thighs - back1 hr
800 zł
thighs - inner1 hr
800 zł
1 body zone, both sides (2 x 2 handpiece applications) + 1 zone FREE1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
2 body zones, both sides (4 x 2 handpiece applications)1 hr 30 min
Świętokrzyska · 1000 złNiepodległości · —
abdomen + hips1 hr 30 min
1000 zł
back + love handles1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
buttocks + abdomen1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
buttocks + back of thighs1 hr 30 min
1000 zł
arms + abdomen1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
waist + back1 hr 30 min
1000 zł
thighs - outer thighs + front of thighs1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
thighs - front + back1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
thighs - back + inner1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
thighs - inner + 1 zone FREE1 hr 30 min
Świętokrzyska · —Niepodległości · 1000 zł
front of thighs + inner thighs1 hr 30 min
1000 zł
back of thighs + outer thighs1 hr 30 min
1000 zł
Package of 4 sessions for 2 body zones (both sides) + 4 Storz Medical acoustic wave sessions for 2 zones FREE1 hr 30 min
Świętokrzyska · 2800 złNiepodległości · —
Package of 4 sessions for 1 body zone (both sides) + 4 Storz Medical acoustic wave sessions FREE1 hr
Świętokrzyska · 3600 złNiepodległości · —
VELVET SKIN CLINIC · aesthetic medicine and laser therapy · velvetskin.pl
recepcja@velvetskin.pl
Scientific evidence

See what the research says

The publications behind this treatment — with PMID identifiers and an assessment of the strength of evidence.

PL
Velvet Skin Clinic logo
VELVET SKIN CLINIC - ŚRÓDMIEŚCIE
ul. Świętokrzyska 30
00-116 Warszawa
Tel. + 48 500 53 30 30
VELVET SKIN CLINIC - MOKOTÓW
al. Niepodległości 92/98
02-585 Warszawa
Tel. +48 500 53 30 55

Email: recepcja@velvetskin.pl
Copyright 2024 - Velvet Skin Clinic 
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