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Permanent Hair Extensions: Choices, Costs and Hair Loss
Dr Chirag Gadhia (GMC)
Medically reviewed by
Dr Chirag Gadhia (GMC)
Updated on November 24, 2024

Permanent hair extensions appeal to many people because they can be worn for months, unlike temporary ones that need to be put on and taken off with each use. They are comfortable to wear and easy to forget about as they blend seamlessly with your natural hair. However, permanent hair extensions cause hair loss to a greater extent than halo or clip-on hair extensions [1]. That is because they apply constant tension to your hair follicles for a prolonged period, increasing the risk of traction alopecia [2].

Choosing the right kind of permanent extensions and maintaining them properly can help you maximise their benefits while reducing your costs and minimising the risk of hair loss. This article will tell you all you need to know about:

  • Permanent hair extension types, pros and cons
  • How hair extensions cause hair shedding and what you can do to avoid it
  • The costs and duration of permanent hair extensions
  • How to properly maintain your extensions to increase their lifespan
Table of Contents

What are permanent hair extensions?

People who want to keep their hair extensions on for as long as possible often opt for the permanent variety. While these don’t really last forever, they have the longest duration of all hair extension types, lasting 3-6 months or even more before requiring reattachment.

Some people also include semi-permanent hair extensions (which last 1-2 months) under this category, as opposed to temporary hair extensions which can be removed and reattached as needed. When discussing permanent hair extensions, we’ll also include semi-permanent options as they have a lot in common.

Permanent hair extensions

Types of permanent hair extensions

Here are some of the most common types of permanent hair extensions.

  • Fusion (bonded or U-tip) hair extensions – Narrow hairpieces that are tipped with keratin or a similar substance and fused to your natural hair using heat (or, more rarely, ultrasound – a process called cold fusion bonding)
  • I-tip (micro-link) hair extensions – Narrow hairpieces that have a bead/link on top which is clamped to your natural hair. Nano ring extensions use the same principle but with smaller links. 
Semi-permanent hair extensions

Types of semi-permanent hair extensions:

  • Tape-in hair extensions – Light, thin wefts (hair attached to a piece of fabric) that attach to your natural hair with a special double-sided tape.
  • Sew-in hair extensions – Wefts of hair manually sewn to a braided portion of your natural hair. These are some of the most common types of hair extensions.
  • Hand-tied hair extensions – Ultrathin and very light strands tied manually to a fine thread and attached to your hair strands.

Can permanent hair extensions cause hair loss?

Yes, permanent hair extensions can make your hair fall out in several ways. From tugging on your hair follicles to causing an allergic reaction, here’s how permanent hair extensions lead to hair loss.

Traction alopecia

Permanent hair extensions are attached directly to your natural hair, weighing it down and pulling on your hair follicles. The applied tension can damage these delicate structures, causing a type of hair loss called traction alopecia. This condition manifests with hair shedding along the tension areas (often the fringe, the sides or the back of the head), as well as scalp bumps, tenderness or inflammation [3]. 

Women with traction alopecia
Women with traction alopecia

Some types of hair extensions are more likely to cause traction alopecia than others, especially longer, heavier varieties. For example, long sewn-in wefts that surround the back side of your head are known to cause a specific, horseshoe-shaped hair shedding pattern [4]. The least damaging permanent extensions are thin, hand-tied wefts that are very light with well-distributed weight along the fabric. 

Fortunately, traction alopecia normally resolves itself a few weeks or months after you take off your extensions. However, in some severe cases, it can become permanent. If that happens, you will require hair growth treatment (e.g. Minoxidil) or even a hair transplant to fix the damage and regain your full hair [5]. That is why it is a good idea to see a trichologist if you don’t see any hair regrowth after 4-6 months after removing your extensions.

Allergic reactions

Components in tape-in extension adhesive or synthetic hair sometimes used for inexpensive semi-permanent hair extensions can irritate your scalp and trigger an allergic reaction [6][7]. This is a common scalp problem also known as contact dermatitis. It manifests with a rash, swelling, itching, tenderness and occasionally hair thinning on the affected area of your scalp [8]. If you experience these symptoms, have your extensions removed as soon as possible and clean your scalp thoroughly of any residual adhesive. 

Patient with scalp contact dermatitis
Patient with scalp contact dermatitis

The symptoms usually subside in a few days, depending on their severity. However, rare, severe cases can result in facial swelling and difficulty breathing. If this happens to you, call emergency services immediately, as it is a sign of potentially deadly anaphylactic shock.  

Hair tangling and matting

Improper hair extension maintenance can cause them to tangle and become matted, involving the surrounding natural hair. This can cause unnecessary hair breakage and split ends.

Some types of extensions are more predisposed to this than others, due to their attachment systems. For example, I-tips are attached with links or beads that can slide down over time and get caught in nearby natural strands. That is why regular brushing, detangling and extension lifting is very important. 

Woman with matted hair
Woman with tangled, matted hair

How to reduce the risk of hair loss from permanent extensions

There are several things you can do to lower the risks of developing hair loss while wearing permanent hair extensions:

  • Avoiding long and heavy extensions, such as lengthy wefts of thick hair.
  • Refraining from wearing extensions over twice as long as your natural hair [1].
  • Testing tape-in extensions on a small patch of scalp before installing them (apply a single extension first and wait several hours to see if a reaction develops).
  • Ensuring that your extensions are installed correctly, as poor technique can lead to additional hair safety risks (for example, extensions that slide down your strands pull harder on your hair follicles). 
  • Only using permanent extensions made of natural hair, to avoid allergic reactions.
  • Taking regular, consistent breaks from wearing extensions (at least 3-4 months in between removal and re-installation).
  • Reattaching your extensions to different rows of your natural hair (this gives your follicles that were previously exposed to tension time to rest).
  • Cleaning, brushing and detangling your extensions gently and regularly.
  • Seeing a trichologist for personalised recommendations.
Woman choosing permanent hair extensions

How to choose the right type of permanent hair extensions?

Whether you’re looking for hair extensions for thickness, length, or to disguise hair loss, this list of pros and cons will help you determine which kind of hair extensions may be most suitable for your needs and preferences.

FUSION (U-TIP) EXTENSIONS
PROs CONs
  • The longest lasting
  • Very secure hold
  • Perfect blend and natural look
  • Time-consuming installation process
  • Heat is normally used to apply them
  • Among the most expensive
MICRO-LINK (I-TIP) EXTENSIONS
PROs CONs
  • Don’t require heat or glue to apply
  • Great for thinner hair (volumising)
  • Quickly removed and reusable
  • Challenging to install correctly
  • Prone to tangling and matting
  • A lot of maintenance needed
TAPE-IN EXTENSIONS
PROs CONs
  • Easy and fast to apply
  • Thin and lightweight
  • Reusable after tape change
  • The glue can cause scalp irritation
  • They can come loose more easily
  • More difficult to blend in
SEW-IN EXTENSIONS
PROs CONs
  • Great for thick, coarse hair
  • Durable, secure hold
  • Do not require heat or glue to apply
  • Heavy, prone to causing hair loss
  • Not suitable for short or fine hair
  • Can feel bulky and uncomfortable
HAND-TIED EXTENSIONS
PROs CONs
  • Light and flat (ideal for fuller hair)
  • Perfect blend and natural look
  • Good weight distribution (least prone to causing hair loss)
  • They don’t help with volume
  • Time-consuming installation
  • Expensive craftsmanship

Watch the following tutorial for more information about the different types of hair extensions and how they are installed:

How much do permanent hair extensions cost?

Different types of permanent hair extensions have different prices, depending on their length, thickness, attachment system and durability, but also on the brand that sells them. Moreover, you also need to factor in additional costs for installation, maintenance (lifting, refitting) and removal. Here are some average costs for permanent human hair extensions in the UK (these may, however, vary widely with different brands and salons).

Fusion (bonded or U-tip) hair extensions cost

  • Average extension cost: £200 – £500+
  • Average installation cost: £150 – £400
  • Average maintenance cost: £100 – £200
  • Average removal cost: £50 – £100

I-tip (micro-link) hair extensions cost

  • Average extension cost: £200 – £600
  • Average installation cost: £200 – £400
  • Average maintenance cost: £100 – £250
  • Average removal cost: £50 – £100

Tape-in hair extensions cost

  • Average extension cost: £150 – £500
  • Average installation cost: £100 – £250
  • Average maintenance cost: £50 – £150
  • Average removal cost: £30 – £80

Sew-in hair extensions cost

  • Average extension cost: £150 – £400
  • Average installation cost: £100 – £250
  • Average maintenance cost: £50 – £150
  • Average removal cost: £50 – £100

Hand-tied hair extensions cost

  • Average extension cost: £250 – £700
  • Average installation cost: £250 – £500
  • Average maintenance cost: £100 – £250
  • Average removal cost: £50 – £100

How long do permanent hair extensions last?

Permanent hair extensions can stay on your head for 1-6 months (depending on the type) without needing reattachment. However, some types of permanent extensions can be reused even after they’ve been removed, provided they are in good shape and their attachment system is renewed. 

High-quality, natural hair extensions that are well maintained can be reused up to 3-4 times over the span of 1-2 years. However, synthetic hair will only look good for 1-3 months of continuous wear, so it should only normally be used for temporary or semi-permanent hair extensions.  

tools used to install permanent extensions

How long do permanent hair extensions take to install?

Permanent hair extension fitting time depends on several factors, such as the type you have chosen, your hair properties, and the technician’s skill and experience level. On average, fusion extensions take the longest to install (4-8 hours), followed by I-tips and sew-in wefts (2-4 hours). Hand-tied extensions take around 2-5 hours to install, while tape-ins are applied the quickest, in only 1-2 hours.

Permanent hair extension maintenance

If you want your permanent hair extensions to last as long as possible and remain natural-looking and safe for your hair, you need to care for them properly. Here’s how to keep your hair extensions looking great.

Professional maintenance

It is a good idea to visit the salon to get your permanent hair extensions lifted, repositioned or refitted every 6-8 weeks. That is because they can slip lower on your strands over time or become loose and require adjustment. Even the types that aren’t likely to move out of place, such as fusion extensions, need to be regularly checked on (though this can be done less frequently – once every 3 months). That is to be sure they are still secure, well cared for, and that they aren’t causing damage to your natural hair. 

At-home maintenance

Caring for your permanent hair extensions needs to be a daily activity. Here is how you can keep yours in tip-top shape for as long as possible:

  • Brush your extensions gently and frequently – Hold the top part of the extension while brushing so you don’t pull on the attachment point. If your extensions are tangled, gently brush out the knots starting at the tips and moving towards the roots. Never pull forcefully to remove stubborn tangles; use a conditioner and try again.  
  • Use the right hair care products – Use gentle, sulphate and paraben-free shampoos or conditioners to wash your hair with extensions on. Avoid products that can weaken their attachment (for example, hair growth oils can weaken fusion bonds and tape-in adhesives, while silicone-based products can weigh I-tips down and make them slip lower on your strands).
  • Keep your extensions moisturised – Use hydrating masks once or twice a month to preserve shine and avoid dry, brittle hair. Just be sure to avoid the top portion of the extensions if the masks contain oil or other substances that can damage their bonds or adhesives. 
  • Avoid heat styling – Much as you may be anticipating styling your new permanent extensions, remember that it’s almost impossible to fix heat-damaged hair. Frequently straightening or curling them using high heat will dry and damage your extensions and reduce their life span. Instead, use cold-styling options. 
  • Protect your extensions while you sleep – Always tie your extensions in a loose ponytail or bun, use a silk pillow case for its hair benefits and never go to bed without drying your extensions, as wet hair breaks more easily [9].

How to get fuller hair without using extensions

If you are considering hair extensions to get more volume in your hair, there are also other ways to achieve this. Book a consultation today with one of our experienced hair doctors. They will run trichology diagnostic tests to determine the cause of your hair loss or thinning and recommend personalised hair growth treatment.

If you’re affected by female pattern hair loss or male pattern baldness, you may be a good candidate for a hair transplant. This simple, outpatient procedure is increasingly popular as it is very safe and effective. The best hair transplant clinics in the UK have almost 100% success rates on both FUE and FUT procedures. And the best part is that, unlike permanent hair extensions that only last a few months, a hair transplant is truly permanent. That means you can still enjoy your hair transplant results after 10 years and even more.

Permanent Hair Extensions: Choices, Costs and Hair Loss, Wimpole Clinic

Frequently asked questions

If you would like to find out more about permanent hair extensions, don’t miss the answers to these frequently asked questions:

Yes, if you are going to wear your permanent hair extensions for more than 3 months, it is recommended to trim their ends just like you do with your natural hair. Getting rid of split ends prevents unsightly frizziness and hair breakage and keeps your extensions looking better for longer. 

Yes, they will normally trim and style your extensions to blend in and match your desired haircut. However, there may be additional costs associated with the styling process, so it is a good idea to discuss your choices with your stylist and get a clear picture of what they entail.

No, it is not a good idea to try to remove permanent hair extensions at home. That is because your natural hair could get damaged or broken in the process. It is best to leave the removal up to the professionals, to make sure your hair is safe and not subjected to any additional stress. 

It is not recommended to dye your extensions, so it is best to colour your hair before installing them and choose a matching shade. Harsh chemicals in bleach and hair dye can cause hair loss by drying out the strands and making them brittle, reducing the lifespan of your extensions. Furthermore, the colour may take differently on your natural hair, leaving you with noticeable and unnatural-looking colour variations. 

Dr Chirag Gadhia (GMC)
Medically reviewed by Dr Chirag Gadhia (GMC)Updated on November 24, 2024
The Wimpole Clinic offers FUE Hair, Beard & Eyebrow Transplants & Trichology.
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