NEW - SDL SKIN TECH
SDL TIGHTEN BOOST™
The first at-home device engineered to lift sagging skin and target midface volume loss
JAWLINE
JOWLS
CHEEKS
NECK
BODY
“DELIVERS EXCEPTIONAL, INSTANTLY VISIBLE RESULTS” · HARRODS
Visibly shrink-wraps sagging skin in five minutes.
Instantly shrink-wraps skin and awakens the collagen matrix to anchor and lift the midface. A visible 5-minute lift, without the downtime.
The SDL TIGHTEN BOOST™ is the first at-home device engineered to lift sagging skin and target midface volume loss. Designed by Fatma Shaheen from 18 years of in-clinic tightening.
The RF Shrink-Wrap Effect™. Five Modes. One Tightening Protocol.
- Instantly shrink-wraps sagging skin for a visible 5-minute lift.
- A clinical-grade 4MHz RF engine awakens the Type I to V collagen matrix to anchor and lift the midface, with results that keep building week after week.
- Works across the surface, dermal and neuromuscular layers with Dermal Matrix Tech™.
- 5-minute quick mode or 30-minute full protocol. No needles. No numbing. No downtime.
Where It Works
- Midface & Cheeks - lifted, with fuller-looking volume.
- Jowls & Jawline - tightened, sharper and more defined.
- Neck & Lower Face - firmer, tighter-looking.
- Forehead, Eyes & Under-Eyes - vertically tightened, smoother-looking.
- Fine Lines & Texture - visibly softened and refined with consistent use.
The device operates across five sequential modes:
1. MESO · Meso Electric Needle · Blue LED 417nm
Prepares the skin, refines texture and supports active ingredient absorption.
2. TIGHTEN · 4MHz RF + EMS · Red LED 633nm
The core firming and lifting mode. Supports collagen remodelling and visibly plumper, more resilient skin.
3. BOOSTER · Electroporation · Yellow LED 590nm
Drives FACETIGHT™ actives deeper into the skin for amplified results.
4. ELASTICITY · Microcurrent · Green LED 521nm
Supports skin tone, elasticity and a visibly lifted appearance over time, particularly through the mid and lower face.
5. LIFT · 3D EMS Rollers · Mechanical + Electrical
Sculpts the jawline, drains puffiness and sets the result.
Please see here for visual guide
Use on clean skin. Follow all 5 modes in sequence 2–3 times per week for the full Dermal Matrix Protocol.
Step 1 - Meso:
Apply to clean, dry skin before any products.
Select Mode 1.
Glide the edge of the device in smooth upward strokes - cheeks, forehead, chin. Edge contact conducts the current.
Step 2 - Tighten:
Apply FACETIGHT™ Serum or conductive gel to face and neck.
Select Mode 2. Begin at intensity level 1.
Glide in upward strokes - cheeks, jaw, forehead.
Step 3 - Booster:
Apply FACETIGHT™ Serum or targeted essence - do not wipe off. Drive actives into the skin's surface layers.
Select Mode 3. Set intensity to level 2-3.
Hold device gently - slow circular movements.
Step 4 - Elasticity:
Apply FACETIGHT™ Crème around eyes or serum to face.
Select Mode 4. Begin at level 2.
Use slow upward sculpting movements over cheekbones and jawline.
Step 5 - Lift:
Apply conductive gel generously to jawline and neck.
Select Mode 5.
Roll upward and outward along jawline - chin to ear.
Skin Design London warrants the SDL TIGHTEN BOOST™ device against defects in materials and workmanship for a period of one year from the date of original purchase.
What is covered
This warranty covers manufacturing defects and hardware malfunctions that arise under normal use conditions. If your device develops a fault within the warranty period, Skin Design London will repair or replace it at no charge.
What is not covered
This warranty does not cover damage resulting from misuse, unauthorised modifications, failure to follow the care and usage instructions, cosmetic damage including scratches and dents, or normal wear and tear of accessories and attachments.
How to make a claim
To initiate a warranty claim, contact our client services team at info@skindesignlondon.com with your proof of purchase and a description of the fault.
Claims purchased via Harrods should be directed to the Harrods Beauty team in the first instance.
TIGHTEN BOOST™ is a cosmetic home-use beauty device designed to improve the appearance of skin firmness, tightness, lift and facial definition. It is not intended for fat reduction or removal, or to diagnose, treat, cure or prevent any medical condition.
Individual results may vary depending on factors including age, skin condition, lifestyle and consistency of use.
Always use according to the Instructions for Use and follow all warnings and contraindications.
Choose options
Before & after
Real results
“It is so easy to use and quick to figure out. You instantly see results. I highly recommend.” · SM, client
Before
After
Before
After
Clients using it at home
Chris, 60 · Session 1. “I immediately saw results in one session of using.”
Five minutes on the commute.
Client review, first use.
Founder Expertise: Why does your skin need it?
Clinical user trials
The proof
Results from independent user trials of SDL TIGHTEN BOOST™.
How it works · Dermal Matrix Tech™
The RF Shrink-Wrap Effect™
Controlled 4MHz RF heat contracts existing collagen while supporting new collagen renewal. Working across the surface, dermal and neuromuscular layers, it lifts the midface and tightens the jowls from the deepest structural layer up.
01 · Before
When the lower face starts to pull down
Looser collagen, less support.
02 · Controlled RF heat
4MHz energy reaches the dermis
Collagen contracts and renewal is switched on.
03 · Tighter support
A tighter, more lifted lower face
A denser support structure.
How deep it works
Instant · first 5 minutes
The shrink-wrap effect
RF warms the deeper layers of the skin to 40 to 45°C. Circulation increases and skin is gently energised, giving an immediately tighter, smoother, more lifted look from the very first session.
No needles. No numbing. No downtime.
Long-lasting · weekly use over 6 weeks
Firmer, week after week
Each session switches on the skin’s repair process, so fibroblasts build fresh collagen and elastin.
“I engineered SDL TIGHTEN BOOST™ to do at home what I do in clinic: lift sagging skin by activating the Type I collagen that true tightening depends on.” Fatma Shaheen
The protocol
Five modes. One tightening protocol.
Built to mirror the sequence of Fatma Shaheen’s signature SDL FACELIFT, every mode is designed around one result: tighter, lifted skin.
Use any mode on its own for a targeted boost. For the best results, follow all five in order.
Mode 1 · Blue LED 417 nm
Meso: prep for the heat
Needle-free electrical pulses + blue LED
Needle-free electrical pulses and blue LED reduce surface resistance by up to 1,000x, opening the path for RF to reach where it’s needed most. 94% agreed their skin texture looked smoother and pores more refined.
Use on clean, dry skin. No product applied.
Why your skin needs blue light
Blue light works at the surface. It helps refine texture and the look of pores, priming skin for the modes that follow.
Mode 2 · The hero · Red LED 633 nm
Tighten: the hero
4 MHz RF + EMS + red LED
The heart of the system. A clinical-grade, high-stability 4 MHz RF engine, paired with EMS and red LED, fires deep into the prepared skin. It delivers instant tightening in 5 minutes while awakening the Type I collagen behind a lasting, structural lift across the jawline, jowls, cheeks and neck.
Apply FACETIGHT™ Serum or Crème first.
Why your skin needs red light
Red light reaches deeper than other visible light. It supports the skin’s natural collagen renewal, helping skin look firmer and plumper over time.
Mode 3 · Yellow LED 590 nm
Booster: fuel the firmness
Electroporation + yellow LED
Electroporation and yellow LED drive FACETIGHT™ Serum deeper, increasing active ingredient delivery by up to 400% and amplifying the firming result.
Apply FACETIGHT™ Serum or Crème first.
Why your skin needs yellow light
Yellow light is calming and brightening. It helps soften the look of redness and boosts radiance while actives are driven deeper.
Mode 4 · Green LED 521 nm
Elasticity: reinforce the rebound
Microcurrent + green LED
Microcurrent and green LED support tone and resilience, helping skin hold its tightened shape.
Apply FACETIGHT™ Serum or Crème first.
Why your skin needs green light
Green light helps balance and even the look of skin tone for a clearer, more uniform complexion.
Mode 5
Lift: sculpt the contour
3D EMS rollers · mechanical + electrical
3D EMS rollers knead and define the jawline and neck, sharpening the lifted profile.
Roll upwards and outwards over face, neck and décolletage.
Why 3D EMS rollers
The rollers knead while EMS works the facial muscles, helping drain puffiness and sharpen the jawline and neck.
“A tool that can be used at home that produces professional results.” · Rose T., verified client
Your ritual
How to use
Five minutes when you’re short on time. The full protocol when you’re not.
Quick mode
5 min
Mode 2 along the jawline, jowls and cheeks for an instant lift before you go out.
Full protocol
30 min
All five modes in order, up to 6 minutes each. Tap a mode to watch its tutorial.
Before you start: Mode 1 runs on clean, dry skin. Modes 2 to 5 need FACETIGHT™ Serum or Crème. Avoid oil-based products. Any mode can be used on its own, but all five in order give the best results.
Technique videos
Setting up your device
Charging, moving between the five modes and adjusting intensity.
What to apply
Which SDL products to use with each mode.
Jawline
The correct angle and direction for each stroke.
Neck
Working upwards without dragging the skin.
Under-eye
A gentler technique for puffiness and fine lines.
What to avoid
The common mistakes, so every session is safe and effective.
Clinician & Founder
DESIGNED BY FATMA SHAHEEN
The art of tightening, perfected over 18 years in her London clinic. Every mode in SDL TIGHTEN BOOST™ traces back to a technique Fatma has used and refined on real faces, including A-list clients preparing for red carpets and fashion weeks.
"This is my book after 18 years, and there's no better way to mark it than through the technology I've refined in clinic across nearly two decades. This is Fatma, in your hands".
Trusted on the red carpet. Lauded by the press.
“Titan of Tightening”
“The Skin Designer of the Stars”
"Skin Saviour"
The same fast-acting, zero-downtime protocols Fatma uses to give clients a sharp, high-definition jawline on demand.
Exclusively at Harrods
The gold standard of at-home tightening
“A natural extension of Fatma Shaheen’s renowned expertise as the Queen of Lifting… harnessing five advanced firming and lifting technologies within a single protocol.”
Device specifications
Output
RF: 4MHz
Blue LED 417nm (Mode 1)
Red LED 633nm (Mode 2)
Yellow LED 590nm (Mode 3)
Green LED 521nm (Mode 4)
Each mode has a 5-minute (300 seconds) timer before it automatically switches off.
Materials & compatibility
Medical-grade stainless steel treatment head
Safe for use with water-based serums, conductive gel, treatment essences, crèmes and hydrogel masks.
Do not use with oil-based products.
Power
Standby time per full charge: over 125 minutes
Charging time under 4 hours. Operated via a built-in single-cell lithium battery.
Dimensions
Length: 190 mm
Width: 43.38 mm
Weight: 317.5 grams
Model: SDL-TB01
Designed in the United Kingdom
Regulatory
EN IEC 55014-1 and EN IEC 55014-2 safety standard. RoHS 2011/65/EU (amended 2015/863/EU). UK Cosmetics Regulation.
In the box
SDL TIGHTEN BOOST™ device
Device book with protocol
1 x USB charging cable
1 x cleaning cloth and 1 x protective pouch
Client reviews
“It’s the best I’ve ever used”
Tahnee, client
Frequently asked questions
The device
What is the SDL TIGHTEN BOOST™?
The SDL TIGHTEN BOOST™ is a professional-grade at-home facial device powered by Dermal Matrix Tech™. A unified multi-physics system combining five clinical technologies in one protocol: Meso Electric, 4MHz Radiofrequency, Electroporation, Microcurrent and 3D EMS Rollers. Every mode traces directly back to treatments used and refined by Fatma Shaheen across 18 years of clinical practice.
How is it different from other at-home devices?
Most home devices operate on a single technology - RF only, microcurrent only, or LED only.
The SDL TIGHTEN BOOST™ combines five distinct clinical modalities in one sequential protocol, targeting the skin at surface, dermal and neuromuscular depth simultaneously.
What does each mode do?
The device operates across five sequential modes:
- MESO: Meso Electric with Blue LED 417nm. Prepares the skin, refines texture and supports active ingredient absorption.
- TIGHTEN: 4MHz RF + EMS with Red LED 633nm. The core firming and lifting mode. Supports collagen remodelling and visibly plumper, more resilient skin.
- BOOSTER: Electroporation with Yellow LED 590nm. Drives FACETIGHT™ actives deeper into the skin for amplified results.
- ELASTICITY: Microcurrent with Green LED 521nm. Supports skin tone, elasticity and a visibly lifted appearance over time.
- LIFT: 3D EMS Rollers. Mechanical and electrical stimulation to sculpt the jawline, drain puffiness and set the result.
What is 4 MHz Thermal Radiofrequency?
TIGHTEN BOOST™ uses 4 MHz Radiofrequency to deliver controlled energy into the skin, creating thermal activity designed to work within the dermal matrix rather than simply heating the skin’s surface. The aim is to support the structures associated with firmness, elasticity and visible lift.
How does RF tighten the skin?
Controlled RF energy creates a thermal response within the dermal layers, designed to support collagen and the skin’s structural matrix. With consistent use, this helps skin appear firmer, tighter, smoother and more lifted, with improved-looking facial definition.
Does the skin become very hot?
The objective is controlled thermal energy, not intense surface heat. TIGHTEN BOOST™ incorporates NTC temperature-monitoring technology designed to regulate temperature during RF treatment and help protect against excessive heating.
Will it melt the fat in my face?
TIGHTEN BOOST™ is not designed or intended for facial fat reduction. The 4 MHz RF mode is designed around the dermal matrix and visible skin firming and tightening, rather than as a fat-reduction treatment.
Why RF + EMS together?
The technologies perform complementary roles: 4 MHz RF targets the appearance of skin firmness and tightness through controlled thermal energy, while EMS supports visible facial toning and definition.
Using it
How often should I use it?
For optimal results, use the full Dermal Matrix Protocol two to three times a week.
What products should I use with it?
The SDL TIGHTEN BOOST™ is formulated to work in synergy with the FACETIGHT™ range.
Mode 1 (Meso Electric Needle) is used on completely dry, bare skin with no product applied. Applying product beforehand would block the skin's surface responsiveness and reduce conductivity. Apply your chosen SDL product after this mode, not before.
For Mode 2 (RF + EMS), apply FACETIGHT™ Serum or conductive gel to face and neck.
For Mode 3 (Electroporation), apply FACETIGHT™ Serum or targeted essence and do not wipe off.
For Mode 4 (Microcurrent), apply FACETIGHT™ Crème around the eyes or serum to the face.
For Mode 5 (EMS Rollers), apply conductive gel generously to the jawline and neck.
Do not use oil-based products with any mode..
Can it make my face look more lifted?
Yes, that is the cosmetic objective of the TIGHTEN mode. With consistent use, RF + EMS is designed to improve the appearance of firmness, lift and facial definition, helping the jawline and facial contours appear more sculpted.
Can I use it around my eyes?
The MESO, BOOSTER and ELASTICITY modes can be used on the periorbital area with care. Avoid direct contact with the eye itself. For a targeted eye treatment, we recommend pairing with the EYETIGHT™ Hydrogel Mask.
Can I use it on my body?
Yes. SDL TIGHTEN BOOST™ can be used on the face, neck, décolletage and body to firm, lift and tighten skin wherever it is needed. Apply your FaceTight™ Serum or other desired product to the treatment area before use, and follow the same protocol as you would for the face. Do not use with oil-based products. For Meso mode, use on clean dry skin with no product.
SDL TIGHTEN BOOST™ is a non-invasive device intended for personal, non-clinical, cosmetic use. Do not use over active skin infections, open wounds, or areas affected by tumours, melanoma or fungal skin conditions. Do not use if you have an active implanted medical device such as a pacemaker, or an overactive thyroid. If you are pregnant or have a pre-existing medical condition, consult your healthcare professional before use. Always read and follow the instructions supplied with the device.
Can I use it alongside clinic treatments?
Yes. It is designed to support skin before, after and between professional treatments such as injectables, peels and lasers. Always follow your clinician on timing.
When will I see results?
Many users report a visible lift and improved skin tone after a single session. With consistent use over four weeks, results compound - supporting firmer, more sculpted and visibly tighter-looking skin.
Optimal results are seen at eight to twelve weeks of regular use.
Safety
Is it safe for all skin types?
Yes. The SDL TIGHTEN BOOST™ has been developed and clinically tested for use across all skin types.
If you are pregnant, have active implanted devices such as a pacemaker, have epilepsy, or are undergoing active cancer treatment, consult your healthcare professional before use.
Does RF damage or strip the skin barrier?
TIGHTEN BOOST™ RF does not work by exfoliating, resurfacing or intentionally damaging the skin's surface. Instead, RF energy is designed to create controlled thermal activity beneath the surface, making it a different approach from treatments that intentionally disrupt the epidermal barrier.
Who should not use it?
Do not use if you are pregnant, have epilepsy or light sensitivity, or take medication that increases photosensitivity.
Is it tested and clinically proven?
Every technology within the Dermal Matrix Tech™ system has been used and validated in Fatma Shaheen's London clinic over 18 years of professional practice, including on A-list clients preparing for red carpet events and fashion week. The device brings that same clinical protocol home.