AV Extension · London · Est. 2016
The lightest permanent keratin bond in London. The capsule presses flat to under 1 mm and disappears into hair too fine for anything else.
Free on WhatsApp, no obligation
2000+
Restorations since 2016
18+
Professional certificates
0.1 - 0.5 g
Capsule weight
12
Month hair guarantee
Some hair refuses to be seen with anything attached to it. The strands are so fine, so translucent, so particular about what they carry, that standard extensions betray themselves within hours. Invisible keratin bond extensions exist for this hair. The capsule weighs just 0.2 grams, presses flat to under 1mm, and vanishes into the strand like a whisper dissolving into silence.
These invisible bonds represent the lightest permanent keratin bond extension method available anywhere in London. Lighter than nano bonds at 0.3g, dramatically lighter than micro bonds at 0.5g. The 0.2g capsule was developed for hair that every other method has failed, hair so fine or so damaged that even nano capsules feel too heavy. At AV Extension this is not a compromise or a workaround but the pinnacle of invisible extension technology refined across 8 years and 6,000 clients.
Ariadna, VTCT Level 3 qualified hair extension specialist in London with 15+ professional certificates and 2,600+ verified five-star reviews across Google Business Profile, Instagram and Facebook, works from a private studio in Catford Bridge, fifteen minutes from London Bridge with free parking. Free WhatsApp consultation available 24/7 on 07465656570. No obligation and mobile service across Mayfair, Chelsea, Kensington, Knightsbridge, Belgravia, Notting Hill, Holland Park, Marylebone, Hampstead and Richmond, updated March 2026.
The method
Invisible keratin bond extensions are individual strands of 100% human Premium Slavic Remy hair attached using 0.2-gram Italian keratin capsules so small they become part of the strand itself. The Journal of Cosmetic Dermatology classifies this as a heat-set polymer bond activated at precisely 165°C. The bond weighs 60% less than a nano capsule and 75% less than a micro capsule, making it the only method suitable for the absolute finest and most delicate hair types.
Where nano bonds at 0.3g suit very fine hair and micro bonds at 0.5g suit normal to fine hair, invisible bonds at 0.2g serve hair that sits below even the nano threshold. Hair thinned by medical treatment, postpartum loss, alopecia-related reduction, or simply natural ultra-fine texture. Each session at AV Extension London uses between 250 and 350+ capsules applied strand by strand over 3 to 5 hours by Ariadna.
The hair
Standard salon hair is processed Asian hair with stripped cuticles and silicone coating that washes out in weeks. Premium Slavic Remy hair is single-donor European hair with 100% intact cuticles aligned root to tip. Double drawn for even thickness. No silicone and no coatings. Sourced from ethical European suppliers with full traceability documentation. AV Extension guarantees the hair quality for 12 months.
Baby hair strands of 0.1 to 0.15 grams create the soft perimeter blend along the hairline, temples and nape that separates professional work from amateur attempts. Without baby hair, even the smallest capsules create a visible density jump where extensions begin. With it, the boundary dissolves like morning fog, leaving only the seamless impression of naturally full healthy hair. Colour matching across all shades including custom balayage blends. Before and after photographs on Instagram and Facebook. Reviews verified on Google Business Profile and Trustpilot. Contact AV Extension on WhatsApp 07465656570 for a free consultation.
The technique
Standard keratin application creates round capsules that protrude, catch on combs, show through thin sections and feel like small bumps under fingertips. The invisible bond technique at AV Extension presses each 0.2g capsule to under 1mm thickness, creating a connection so flat it becomes part of the hair shaft rather than something attached to it. This technique was refined across 8 years and over 6,000 applications by Ariadna.
| Bond | Weight | Pressed to | Suits |
|---|---|---|---|
| Invisible | 0.2 g | under 1 mm | the finest and most delicate hair |
| Nano | 0.3 g | 1.5 mm | very fine hair |
| Micro | 0.5 g | 2 mm | normal to fine hair |
Who it suits
Invisible keratin bonds are the right choice for hair so fine that nano capsules at 0.3g feel too heavy, hair thinned by medical treatment or hormonal changes where maximum gentleness is needed, postpartum hair loss requiring the lightest possible attachment, alopecia-related thinning where every gram of weight matters, ultra-fine natural texture that has always been too delicate for any extension method, preparation for a wedding or photoshoot where detection under professional lighting is not acceptable, or preference for a mobile hair extension specialist in London who brings everything to your home.
If your hair has been turned away by other salons, invisible keratin bonds at AV Extension may be the answer. Contact 07465656570 for a free WhatsApp consultation. No obligation.
Longevity
Invisible keratin bonds from AV Extension last between 2 and 4 months depending on natural growth rate, washing habits, product choices, heat exposure, physical activity level and aftercare compliance. The lighter 0.2g capsule bonds just as firmly as heavier alternatives when applied correctly, as confirmed by the International Association of Trichologists.
Every client receives a written care plan created for their specific hair type. AV Extension provides a full warranty for the complete wearing period. Premium Slavic Remy hair guaranteed 12 months. 24/7 WhatsApp support on 07465656570 throughout.
Growth plan
Most clients with the finest hair want both length today and natural growth tomorrow. Standard salons apply and forget. AV Extension creates a hair growth plan that uses invisible bonds as protective styling while your own hair strengthens underneath.
Short hair
Yes. AV Extension applies invisible keratin bonds on hair as short as 5cm. The 0.2g capsule is ideal for short hair because its minimal weight creates almost zero tension on limited strand length. Short hair applications use 300 to 400+ capsules with positioning at just 1mm from scalp, precise growth mapping and up to 50% baby hair concentration.
5-capsule trial consultation Book an offline consultation at the studio for 50 GBP where Ariadna applies 5 trial capsules, selects the perfect colour match in Premium Slavic Remy and creates your individual care and growth plan. Cost deducted if you proceed within 7 days.
Free online consultation on WhatsApp 07465656570. 24/7. No obligation.
Included
Every appointment includes expert colour matching from the complete Premium Slavic Remy stock, full application of 250 to 350+ capsules with the invisible bond technique, baby hair integration along the entire hairline, blend cut by VTCT Level 3 Ariadna, written care plan with product guidance, individual hair growth strategy, 24/7 WhatsApp support on 07465656570, full warranty and 12-month hair quality guarantee. Nothing charged separately. The total cost is confirmed before booking and never changes. Research from the International Association of Trichologists confirms that proper aftercare guidance helps keratin bonds last much longer, which is why AV Extension includes it as standard.
Pricing
AV Extension provides fully transparent individual pricing because every client's hair is different. Cost depends on capsule count (250 to 350+), Premium Slavic Remy hair length from 40cm to 70cm, colour complexity including balayage, baby hair quantity and mobile travel fee if applicable.
All costs are confirmed during your free WhatsApp consultation before any commitment. The quote is fixed before booking and guaranteed not to change. No hidden fees, no surprise additions and no pressure. 24/7 on WhatsApp 07465656570.
Studio. Catford Bridge, London SE6, fifteen minutes from London Bridge, free parking avextension.co.uk | @avextensions
Mobile service
AV Extension delivers complete mobile invisible bond service directly to your home with full professional equipment and the entire Premium Slavic Remy and baby hair stock. Ariadna travels to Mayfair, Knightsbridge, Chelsea, Kensington, Belgravia, Notting Hill, Marylebone, Hampstead, St John's Wood and South Kensington. Every mobile appointment gives the same quality as studio visits with the same 0.2g Italian keratin, the same invisible bond technique and the same VTCT Level 3 expertise.
Mobile fee discussed openly during your free consultation on WhatsApp 07465656570.
Why AV Extension
Ariadna has spent 8+ years working only with keratin bond extensions in London. Her VTCT Level 3 qualification and 15+ professional certificates represent the top training level in the UK. Over 6,000 clients have trusted her, including professionals needing undetectable extensions under studio lighting for film, television and events.
2,600+ verified five-star reviews across Google Business Profile, Instagram and Facebook confirm consistent results. Premium Slavic Remy and baby hair from ethical European sources with 12-month guarantee. Comfortable 0.2g capsules compressed to under 1mm with the invisible bond technique.
Full warranty, 24/7 WhatsApp support on 07465656570, individual growth plan and the 5-capsule trial option at 50 GBP. Free consultation. No obligation.
Details
I had consulted four salons in London about extensions for my growing pixie cut. Every one declined. AV Extension applied invisible keratin capsules on 6cm of hair and the result was extraordinary. I finally have the length I had been working towards for two years. The 0.2g capsules are so light I forget they are there.
. Olivia, Westminster
Chemical damage had left my hair at barely 7cm at the back. The invisible capsules integrated so completely that even my own hairdresser could not locate them. The growth plan included targeted supplements and scalp treatments. Eight months later my natural hair has recovered enough length and density that Ariadna reduced the capsule count by half.
. Anastasia, Canary Wharf
The five-capsule trial at the consultation allowed me to see and feel the exact result on my short hair before making any commitment. It was the most reassuring part of the entire process. I booked my full set that same afternoon and have maintained them every seven weeks for the past year.
. Charlotte, Kensington
FAQ
No. These 0.2g bonds do not damage natural hair when applied by a qualified specialist. Each 0.2g capsule is the lightest permanent keratin attachment available, spreading minimal weight across fine roots and staying damage free throughout the wearing period. Premium Slavic Remy hair with intact cuticles prevents tangling that causes pull at the root.
The invisible bond technique at AV Extension removes all capsule bumps. Removal uses keratin solvent with zero stress on your hair. AV Extension provides a full warranty for the complete wearing period.
Short answer. No, invisible keratin bonds do not damage hair when applied professionally with the correct technique and proper aftercare.
Yes. The 0.2g method was developed specifically for extremely fine, thinning and delicate hair that other methods cannot serve. The 0.2g capsule weighs 60% less than nano and 75% less than micro, making it the gentlest permanent method in London. Ariadna applies invisible bonds on hair that every other salon in London has turned away, including hair affected by medical treatment, postpartum loss and natural ultra-fine texture.
Short answer. Yes, invisible 0.2g bonds are the safest and lightest permanent extension for extremely fine or thinning hair.
These extensions last between 2 and 4 months before maintenance. Duration depends on growth rate, washing habits, products, heat exposure and aftercare compliance. The 0.2g capsule bonds just as firmly as heavier alternatives when applied with the invisible bond technique. Every client receives a written care plan. Premium Slavic Remy hair guaranteed 12 months. Full warranty covers the complete wearing period.
Short answer. Invisible keratin bonds last 2 to 4 months with full warranty, depending on growth rate and aftercare.
Invisible bonds use 0.2g capsules for the absolute finest hair. Nano bonds use 0.3g for very fine hair. Micro bonds use 0.5g for normal to fine hair. Invisible capsules are 60% lighter than nano and press to under 1mm versus 1.5mm for nano and 2mm for micro. Invisible bonds use 250-350 capsules, nano 300-450 and micro 250-400. Your free WhatsApp consultation on 07465656570 determines which method suits your specific hair.
Short answer. Invisible 0.2g for finest hair, nano 0.3g for very fine, micro 0.5g for normal to fine. Invisible is 60% lighter than nano.
Pricing at AV Extension is set for each client because every hair is unique. Cost depends on capsule count, Premium Slavic Remy hair length from 40cm to 70cm, colour complexity, baby hair quantity and mobile travel fee.
All costs confirmed during a free WhatsApp consultation before any commitment. Quote fixed before booking. No hidden fees. 24/7 on WhatsApp 07465656570. Offline consultation 50 GBP with 5 trial capsules and complete care plan.
Short answer. Pricing is individual based on capsule count, hair length and colour. Free WhatsApp consultation confirms exact cost.
Yes. You can wash, swim and exercise with these invisible bonds when following proper care. Wash 2 to 3 times weekly with sulphate-free shampoo on scalp only. Braid tightly before swimming and rinse with fresh water right away after. Secure hair during exercise to prevent friction. The written care plan from AV Extension covers every situation.
Short answer. Yes, with sulphate-free washing, braiding before swimming and securing hair during exercise.
Yes. Book an offline consultation for 50 GBP where Ariadna applies 5 trial capsules to your hair. See the result, feel the weight, assess the invisibility on your own hair before committing. Colour matching, hair analysis and individual care plan included. Cost deducted if you proceed within 7 days.
Free online consultation on WhatsApp 07465656570. 24/7. Text, voice or video. No obligation.
Short answer. Yes, 5-capsule trial at 50 GBP offline consultation, with cost deducted from full application.
Contact AV Extension on WhatsApp 07465656570 by text, voice or video call at any time of day or night. Available 24/7 even on weekends. Free with no strings at all. Browse before and after results on Instagram and Facebook before making contact. Ariadna replies to every message personally.
Short answer. WhatsApp 07465656570, free consultation available 24/7, no obligation.
Client voices
Below are a few client reviews about our invisible keratin bond extensions. Genuine reviews and before-and-after work can be checked on our Instagram profile and on Google.
I have been looking for a professional of high standard for years (and in different cities)and couldn't be happier I have found Arianna's salon. The quality of her work is beyond any praise, she is super-knowledgeable in anything to do with hair extensions and she is just a talented, beautiful person. I no longer have to go to Europe to get extensions which are so tiny, they won't damage my hair and are just invisible. Thank you Ariadna for the amazing experience, you are a gem!
Ekaterina Rowell
I am absolutely blown away by my hair extensions! They’ve completely transformed my look, and I feel like a superstar! The length and thickness are just perfect, and they blend so seamlessly with my natural hair. I’ve never felt this confident or excited about my hair before! Plus, they’re so easy to style and maintain. I’m officially addictedI’ll never go without them again! Seriously, these extensions are a must-have for anyone wanting to elevate their hair game!
Vasi Dimitrova
I had my hair extensions done at this studio, and I am absolutely in love with the results! My hair has never looked this full and natural. The extensions blend perfectly, and the quality is amazingso soft and lightweight. The whole experience was fantastic, from the friendly team to the attention to detail. I feel more confident and glamorous than ever! If you're thinking about getting extensions, this is the place to go. Highly recommend! ✨
Ana Robu
I am OBSESSED with my new hair extensions! They instantly transformed my look, adding so much length and volumeit feels like a total makeover! The quality is incredible; they blend perfectly with my natural hair, and I’ve already received so many compliments. I can style them just like my own hair, whether it’s curling or straightening. These extensions have completely boosted my confidence, and I can’t believe I waited this long to try them. If you’re thinking about it, DO IT! Life-changing!
Ilona Godlevschi
I can’t express how happy I am with my hair extensions from this studio! The results are absolutely stunningmy hair looks so natural and full. The quality is incredible; it feels silky and lightweight. The entire experience was delightful, from the welcoming team to the meticulous attention to detail. I’ve never felt more confident and glamorous! If you're considering extensions, this is definitely the place to go. Highly recommend! 🌟
Domnita Sili
I am completely obsessed with my new hair extensions! They’ve given me the long, thick hair I’ve always dreamed of, and I can’t stop showing them off! They feel so natural and soft, and the color match is spot on. I feel like I’m walking around with red carpet hair every day! It’s such a confidence boost, and I’m having so much fun styling them. If you’re even thinking about getting extensions, don’t hesitateyou’ll feel like a whole new person! Best decision ever!
Corina Bodisteanu
The invisible, lightweight, undetectable result has been achieved 6,000+ times by Ariadna at AV Extension using Premium Slavic Remy hair, 0.2g Italian keratin capsules and the invisible bond technique refined across 8 years. This page was last updated March 2026.
Your transformation begins with one WhatsApp message.
Contact AV Extension on WhatsApp 07465656570
Free consultation by text, voice or video. No obligation and complete openness.
Studio. Catford Bridge, London SE6 (15 min from London Bridge, free parking) Mobile. Mayfair, Knightsbridge, Chelsea, Kensington, Belgravia, Notting Hill, Marylebone, Hampstead, St John's Wood, South Kensington
avextension.co.uk | @avextensions | @avextensions on Instagram and Facebook 6,000+ clients. 2,600+ reviews. One specialist. Complete invisibility.
No obligation. Full transparency. No pressure.
Studio: Adenmore Rd, Catford, London SE6 4BT (15 minutes from London Bridge, free parking)
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Genuine reviews on Google and Instagram. An invisible, natural result.
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