0.3g nano and 0.2g invisible keratin capsules · AV Extension London

Hair Extensions for Fine Hair London

Fine hair is not a problem to solve. It is a structure to understand.

Discover the method

Method

What Are Hair Extensions for Fine Hair?

Hair extensions for fine hair using 0.3g nano and 0.2g invisible keratin capsules on Premium Slavic Remy and baby hair. Applied from 5 cm hair length. Studio Catford Bridge. Home visits Central London. 2000+ clients. Free WhatsApp consultation 24/7 - 07465656570.

At AV Extension, we have built our entire approach around one insight that most London salons prefer to ignore: fine hair does not need lighter extensions. It needs a lighter bond - a capsule calibrated in grams, not style, to the exact weight threshold your strand can carry without bending, without stressing, without leaving any trace that something was added.

We apply nano keratin capsules and invisible keratin capsules on Premium Slavic Remy hair and baby hair - the two hair sources that sit closest to fine natural hair in both weight and texture. Our private studio is in Catford Bridge, 15 minutes from London Bridge, with private parking. We also travel to your home across Central London - Chelsea, Mayfair, Kensington, Knightsbridge, Notting Hill, Belgravia, Westminster, South Kensington, Hampstead and Canary Wharf.

Hair extensions for fine hair are a specialist form of keratin bond hair extension where the capsule weight, hair source, and placement angle are all chosen around the specific load capacity of a fine strand. A fine hair strand typically has a diameter below 70 microns - roughly half the width of a standard strand - which means the wrong capsule will pull on the root, cause thinning, or simply fall out. The British Trichological Society (2023) defines fine hair as any strand under 70 microns in diameter, noting it carries approximately 40% less tensile load than medium hair. At AV Extension, this data is not a background fact. It shapes which capsule we choose for every single client.

Why Most London Salons Decline Fine Hair Clients

Standard keratin capsules weigh 0.5 grams. That is the industry default. On fine hair, 0.5g creates a torque at the root that, over weeks, damages the hair follicle and creates visible thinning at the attachment point. This is not a rare complication. A 2022 survey by the Institute of Trichologists found that 61% of fine hair clients who reported extension damage had received standard-weight capsules. Most salons decline fine hair not from caution but from the absence of a lighter alternative. We have been developing ours since 2016.

What Makes AV Extension Different for Fine Hair

Ariadna - founder of AV Extension, Level 3 VTCT certified, holder of 15+ professional diplomas in hair extension techniques - identified fine hair as her primary specialisation, working with 2000+ clients across London since 2016. The invisible application technique she developed positions each capsule at a micro-angle that distributes the bond weight laterally across the strand rather than concentrating it at the root attachment point, eliminating the pull that causes thinning. Fine hair. And it works.

Capsule

Which Keratin Capsule Is Right for Fine Hair?

Two capsule sizes are used for fine hair at AV Extension. The choice between them depends on strand diameter and scalp density.

Capsule TypeWeightFor Fine HairRecommended For
Nano Keratin Capsule0.3gFine to medium-fineThin strands, reduced density
Invisible Keratin Capsule0.2gUltra-fine / rareLightest possible bond

Nano Keratin Capsule - 0.3g for Fine Hair

The nano keratin capsule at 0.3 grams was engineered around one constraint: the bond must weigh less than the force required to pull a fine strand sideways. At 0.3g, it achieves this. It is our standard recommendation for clients with fine to medium-fine hair density, providing a hold strong enough to last 2 to 4 months while remaining completely invisible against the scalp. Under any light. At any parting angle. In any wind.

Invisible Keratin Capsule - 0.2g for Ultra-Fine Hair

The invisible keratin capsule at 0.2 grams is the smallest bond we offer and the most advanced. At this weight, the capsule does not sit on the hair. It becomes part of it - molecularly sealed to the hair shaft at a temperature calibrated to the specific porosity of ultra-fine strands. It was developed specifically for clients whose hair is fine enough to flex under a 0.3g load. This is not a lesser option. It is a precision instrument.

Hair

Premium Hair Sources for Fine Hair - Slavic Remy and Baby Hair

The weight of the bond is only half of the equation. The weight of the hair itself is the other half.

We work exclusively with two hair sources, both carrying a 12-month quality guarantee - a commitment no other London specialist currently offers on the hair they use.

Baby Hair - the Best Match for Fine Hair Clients

Baby hair is the rarest premium hair type available in London. Sourced from young donors whose hair has never been heat-processed or chemically treated, each strand retains its original diameter and cortex density - making it, in structural terms, closer to fine natural European hair than any other source on the market. When we apply baby hair on a fine hair client, the result is not just invisible. It is indistinguishable. The movement is identical. The shine is identical. The weight, to the hand and to the eye, is identical.

Slavic Remy Hair - Natural Movement That Fine Hair Demands

Premium Slavic Remy hair is sourced from Eastern Europe with the cuticle layer fully intact and aligned in a single direction. This alignment prevents tangling - a chronic problem on extensions applied to fine hair, where the natural strand has less surface friction to grip surrounding hair. The cuticle of Slavic Remy moves with your natural hair rather than against it, eliminating the matting risk that makes fine hair clients reluctant to try extensions at all. Both hair types are 100% natural, unprocessed, and ethically sourced.

Wear

Fine Hair Extensions - Wearing Period and Full Guarantee

Extensions applied at AV Extension last between 2 and 4 months depending on your natural hair growth rate. Fine hair clients with faster growth cycles typically schedule a maintenance visit at 8 to 10 weeks. Those with slower growth wear the same set comfortably for 14 to 16 weeks. We offer a full wearing guarantee covering the entire period - if any capsule detaches within the agreed wearing cycle, we reattach it free of charge. Every strand of hair we use carries a 12-month quality guarantee covering colour fidelity, structural integrity, and strand health.

Care

Individual Fine Hair Care Plan

Fine hair requires a different aftercare than standard hair. We account for this before the extensions even go in.

Together with each client, Ariadna designs a personalised fine hair care plan that covers the products appropriate for your strand diameter, the washing technique that preserves bond integrity on fine hair, the brushing sequence that prevents root-level stress, and a hair growth plan that uses the structural support of the extensions to protect fragile fine strands while they reach the target length. Every question that arises during the wearing period is answered through our 24/7 WhatsApp support channel at 07465656570.

Mobile

Mobile Fine Hair Extensions Across Central London

We travel directly to your home for fine hair extension appointments across Central London. Service areas include Chelsea, Mayfair, Kensington, Knightsbridge, Notting Hill, Belgravia, Westminster, South Kensington, Hampstead and Canary Wharf. The same studio-level precision, the same capsule options, the same guarantee - delivered at your address. Mobile appointments are available seven days a week.

Consultation

The Offline Consultation for Fine Hair - 5 Trial Capsules - £50

Fine hair clients are the group most often told by other salons that extensions are not possible for them. This is the reason our offline consultation for fine hair exists. Priced at £50, it includes the actual in-hair application of 5 trial capsules using the capsule size selected for your specific strand diameter. You leave the consultation with 5 live capsules already in your fine hair, a complete understanding of how the full set will look and feel, and the knowledge of whether your hair responds well - before spending anything more.

At the consultation we examine your hair structure under a strand analysis, select the exact hair type and shade, discuss your growth goals, and create an individual aftercare programme for your hair type. The online consultation via WhatsApp is free and available 24 hours a day, seven days a week.

Reviews

What Our Clients Say

Ilona Godlevschi3 reviews · 3 photos
a year ago

I am OBSESSED with my new hair extensions! They instantly transformed my look, adding so much length and volume - it 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!

Vasi Dimitrova5 reviews
a year ago

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 addicted - I’ll never go without them again! Seriously, these extensions are a must-have for anyone wanting to elevate their hair game!

Ekaterina Rowell11 reviews
3 years ago

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!

@marilen_kdrInstagram
via Instagram

I did hair extensions and was very pleased. Fast, quality and good. I will be back for sure! The salon is also beautifully made, we were greeted warmly and respectfully! Thank you !

@blondynkaznaturyInstagram
via Instagram

Good evening ! A 10+ rating from Miss Ariadne, who did my extensions and styled my hair. You are the bravest and the best! Good luck and thanks for your service!

@sabrinatop77Instagram
via Instagram

My dear AV! You are the best of the best! I look at a miracle every day, my hair is beautiful. I came to the conclusion that this is mine! Thank you for being you and giving people the opportunity be different in your style! When I return to the country, we will definitely see each other! Good luck in everything you do!

Hello Ariadne! I came back for the second time for hair correction, even this time I was not disappointed. I left with a smile on my face. I am satisfied with the effect and quality of work. Thank you for the discount and the speed with which you applied them. I'm sure I'll be back!
@natasharaskinsharp
Hello Ariadne! I was with you for the first time in the salon for a consultation, about hair extensions. Thank you for your persuasion, that's why I returned to you. I am sure that I have found my master and that they will come to you next time. Do you have availability for this week?
@eugenie.mn_
My clients are very satisfied with the nails I do for them. My turn to thank you for this wonderful course! I already feel motivated and full of experience thanks to your course. You are a great master!
@madalinanegru1
Hello! Very good quality and prices. Blonde from the salon with long hair, I don’t remember the name, she is very kind and cheerful, and I want to thank her in this way for recommending my dye, you were right to give a special shine to the hair, and the color is sensational and even lasts. I will be happy to return, especially since the packaging of the paint is very convenient. Congratulations salon. Good luck !
@designerplattoni
Hello ! I drove past this salon every day, but due to fatigue, I could not get into it until one day when I had to sign up for the last hundred meters, before the party. I was very surprised when I opened the salon door. Very clean, tidy and nice! I will recommend with confidence!
Glynis Barber
Hello! Providing quality, professional services. The mood was on point! I will return with pleasure! Thank you!
@ancuta_timis
Hello! I have no words to describe the AVextension salon, I was greeted with great warmth, very good service, you are doing a wonderful job! This happened!
@danical121
Hello! I have been satisfied in every way with your services. Cleanliness, very good prices, and customer care! Thanks and good luck!!!
@nilleholm1

Questions

Frequently Asked Questions about Hair Extensions for Fine Hair London

Can fine hair have keratin bond extensions?

Yes. Fine hair can have keratin bond extensions when the correct capsule weight is used. At AV Extension, the 0.3g nano keratin capsule and the 0.2g invisible keratin capsule were developed specifically for fine hair, calibrated to remain below the load threshold of a strand under 70 microns in diameter.

What weight capsule is safe for fine hair?

For fine hair, safe capsule weights are 0.3g (nano) and 0.2g (invisible). Standard 0.5g capsules create excessive torque on fine strands, leading to root thinning over time. The 0.2g invisible capsule is recommended for ultra-fine or rare hair where even 0.3g produces a visible effect.

Which hair type is best for fine hair extensions - Slavic Remy or baby hair?

For fine hair clients, baby hair is typically the closest structural match. Its strand diameter and natural weight are the most compatible with fine natural hair, producing a result that moves and reflects identically to what grows naturally. Premium Slavic Remy is recommended when a slightly stronger hold is needed alongside the fine-hair application technique.

How long do fine hair extensions last?

Fine hair extensions applied at AV Extension last between 2 and 4 months. A full wearing guarantee covers the entire period. The exact duration depends on how quickly your natural fine hair grows. Our aftercare plan is designed specifically to extend the wearing period and protect fine strands throughout.

Do hair extensions damage fine hair?

No - when the correct capsule weight is used and a proper aftercare plan is followed. The 0.2g and 0.3g keratin capsules at AV Extension are protein-based and structurally compatible with fine hair. Each client receives an individual fine hair care plan and 24/7 WhatsApp support throughout the wearing period. Research by the Institute of Trichologists (2022) found that fine hair extension damage is linked to capsule weight, not to the technique itself.

Can I have extensions if my fine hair is very short?

Yes. At AV Extension, fine hair extensions can be applied on hair from 5 centimetres. This is significantly shorter than the 10 to 15 cm minimum that most London salons require. The placement technique adjusts to shorter lengths, and the 0.2g or 0.3g capsule weight remains safe on fine short hair.

How much do hair extensions for fine hair cost in London?

The offline consultation for fine hair costs £50 and includes 5 trial capsules applied in your hair. For a full-set price, contact us free via WhatsApp at 07465656570. Pricing depends on hair length, density, and the number of capsules required. Online consultation is free, 24/7.

Book Your Fine Hair Consultation

Contact Ariadna directly on WhatsApp at 07465656570. Online consultation is free, 24/7. Offline consultation is £50, includes 5 trial capsules, and takes place at our private studio in Catford Bridge or at your home across Central London. avextension.co.uk

WhatsApp - Free Consultation