What Is Botox and How Does It Work?

Anna Kremerov
Checked By Anna Kremerov

Botox is the most popular cosmetic treatment in the world today and with good reason! It’s a safe and effective treatment with no downtime for lines and wrinkles formed by the facial muscles and it can last up to six months. However, as easy as it may sound, it's vital to find a knowledgeable and experienced medical practitioner to get natural-looking results. 

In small doses, Botox can help reduce facial wrinkles and is most commonly used to treat forehead lines, severe frown lines and crow's feet. It also has been approved by the FDA (Food and Drug Administration) to treat certain medical concerns such as chronic migraines, excessive sweating (severe underarm sweating is known as hyperhidrosis), bruxism and overactive bladder.

You may be asking, is Botox right for me?

What exactly is it?

And what are the side effects?

To help you understand, we've put together everything you need to know about anti-wrinkle injections.

What Is Botox?

Botox is a brand name for botulinum toxin type A, a neurotoxic protein that is injected into specific muscles with a thin needle to reduce the appearance of wrinkles. It prevents the release of certain chemical signals and messengers coming from nerves which provide a temporary reduction in muscle contraction and movement.  

Other brands of botulinum toxin available in the UK include Bocouture, Azzalure, Letybo and Nuceiva. New brands are emerging, but these are currently the most well-established and widely used.

They are all approved for cosmetic use in adults.

What is Botox?

What Is Botox Made Of?

Botox derives from a commercially prepared form of Clostridium botulinum bacteria, which are normally present in different natural settings such as soil, forests and lakes,

How Does Botox Work?

Botulinum toxin is a purified protein that temporarily blocks nerve impulses. Injections are intended to relax the muscle and stop it from contracting, which will decrease wrinkles.

The amount of botulinum toxin injected depends on the brand used and the treatment area; it usually ranges from 5 units to 150 units per session.

What Medical Conditions Can Be Treated With Botox Injections?

Botulinum toxin can be used for a number of medical conditions. Some include:

Is Botox safe?

Is Botox Safe?

Yes, Botox treatments are generally safe. However, as with any medical procedure, there are risks and side effects associated with injections.

You should be aware of these risks before considering treatment. A good practitioner will discuss all of these with you in detail before offering treatment.

Botox is a prescription-only medication that should be administered by a medically qualified injector such as a doctor, dentist or nurse.

How Should I Prepare for Botox Treatment?

It's important to follow instructions when preparing for Botox injections. Your practitioner will advise you of these during the consultation, but here are a few guidelines:

  • Remove makeup and jewellery from the area where you will be receiving injections.

  • Clean the skin with soap and water, if necessary.

  • Avoid alcohol, coffee and smoking for 24 hours before your appointment (these substances can increase bruising).

  • Avoid any NSAID’s such as Aspirin, Ibuprofen, Naproxen for two days before your appointment (these can increase risks of bleeding and bruise at the treated sites)

What Should I Expect During Botox Treatment?

During Botox, you can expect:

  • To have some numbing cream applied to your skin at the injection sites. This is not performed routinely but will help to minimise discomfort for anxious patients 

  • For there to be a few small red dots where the injections were made that last anywhere from a couple of hours up until 2 weeks post-treatment – though these should not affect your daily activities or routines unless they bother you personally (in which case we recommend applying ice packs over them).

What should I expect during Botox treatment?

How Long Does Botox Treatment Take?

The treatment takes about 15-30 minutes, depending on the number of areas being treated and the severity of your concerns.

Are There Any Side Effects to Botox Injections?

Side effects are rare but after Botox is injected into the muscle, they may include:

  • Headache: this is the most common side effect after the procedure and usually goes away in a few days.

  • Severe headache: if you have headaches that don't go away after the first week let your doctor know right away so they can help you find an effective treatment (such as taking over-the-counter pain medicine).

  • Swelling around your eyes: this can happen anywhere from one hour to two days after Botox injections and should go away completely within two weeks of having injections.

  • Allergic reactions: a small percentage of people develop an allergic reaction to a Botox injection. Symptoms can include redness, burning, itching or swelling at the injection site. If you experience a severe reaction after getting treatment, contact your practitioner immediately and seek medical attention.

  • Droopy eyelids: patients can develop droopy eyelids after getting injections of botulinum toxin in their forehead area (glabella).

  • Dry mouth: this side effect is more common among men than women and usually lasts only a few days following treatment, according to the American Society of Plastic Surgeons (ASPS). If your dry mouth continues beyond that point or becomes unbearable while it lasts, then you may need additional medication like lip balm or throat lozenges until it goes away completely but don't worry - this isn't permanent!

  • Dry eyes: if your eyes feel irritated and dry, you may require eye drops following treatment. Get in touch with your practitioner.
    If at any point after your injections, you have difficulty breathing or double-vision you should contact a medical professional immediately.

What Happens After Botox Injections?

After your procedure, you may experience some mild redness and swelling at the injection site. These symptoms are normal and typically fade within 24 hours.

To help minimise side effects, don't massage treatment areas, avoid direct sun exposure, hot and steamy environments (including hot tubs), vigorous exercise f and alcohol consumption for the next 24 hours

How Long Does It Take for Botox to Work?

It normally can take up to two weeks for you to see the full effect of your injection, but you can start to see a difference starting from day 3-5 following your treatment most people are able to have repeated treatments every three to six months as needed.

How long does Botox last?

How Long Does Botox Last?

On average, Botox will last for three to four months. However, this varies depending on the person, the dose administered, the strength of the muscle and where they have been treated.

For example, it can last longer in the muscles that are used less frequently (such as around your eyes) than in areas like your forehead, frown lines and around the mouth, as muscles tend to move more often in those locations.

It's important to keep in mind that Botox is not a permanent solution. This means that if you want ongoing results, you will need repeat treatments every few months.

Do Botox Injections Hurt?

Botox injections are generally considered quite painless and numbing cream or ice will help ease any pain from the injection.

A small number of people can experience a little soreness, swelling or bruising after their treatment, but this usually goes away after a few hours.

Who Should Not Get Botox Injections?

Botulinum toxin is not recommended for pregnant women or children under 18 years old.

It is regarded as a medical treatment and therefore people with certain health concerns are not suitable for the treatment.

Botox is not safe for you if:

  • You are pregnant or breastfeeding

  • You have certain neurological diseases

  • You have hypersensitivity to any component of the formulation

  • Have a generalised disorder of muscle activity (e.g. myasthenia gravis)

  • Have a bleeding disorder of any type

  • Are using or likely to use aminoglycoside antibiotics or spectinomycin

Can You Get Botox While Pregnant?

Any Botulinum toxin is not recommended during pregnancy.

Can You Get Botox Whilst Breastfeeding?

Most medical practitioners do not recommend having botulinum toxin injections while you are breastfeeding.

Can you get Botox while breastfeeding?

What’s the Difference Between Botox and Hyaluronic Acid (Ha) Dermal Fillers?

The major difference between the two is that botulinum toxin is a neurotoxin while dermal fillers are not.

A neurotoxin such as Botulinum toxin Type A is a substance that interrupts neurological communication between specific nerves and muscles thus temporarily preventing muscles from contracting and creating wrinkles.

In contrast, rather than blocking communication between nerves, HA dermal fillers will restore age-related volume loss and improve the appearance of facial wrinkles by supporting and strengthening skin directly under the wrinkles with hyaluronic acid molecules (the same ones naturally found within skin tissue). These molecules attract water back into cells underneath your skin's surface so that they plump up over time thanks to the extra hydration boost. They also help keep moisture locked inside.

Book Your Botox Consultation Today.

As you will have learnt, botulinum toxin (Botox, Bocouture, Azzalure, Letybo and Nuceiva) is a great tool to help you look younger and fresher. It’s important that you get treated by an experienced, medically trained, and qualified practitioner who will inject you safely.

As always, if you have any questions you can use our Botox Q&A where you can ask for more advice direct from a trusted, experienced medical practitioner.

Not sure Botox treatment is right for you? We have lots of Botox FAQs, Botox videos, Botox reviews, and Botox before and after images for you to do more research if you are not ready to speak to a medically trained Botox injector yet.
If you want to look for your nearest accredited and verified Botox clinic, your local Botox clinics are listed below. 

Dr Liesel Holler

Dr Liesel Holler specialises in Advanced Medical Aesthetic procedures such as Non-surgical facelifts, nose-reshaping and tear- trough treatments, with natural results. She holds busy clinics in Mayfa...[READ MORE]

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30b High Street, Chislehurst, BR7 5AN

EC Aesthetic Clinic

Providing general and anti-ageing medical treatments throughout the London area, ECM Aesthetics focuses on real preventive measures; promoting a healthy life style and improving the signs of agein...[READ MORE]

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Harley Street Health Centre, 13 Queen Anne Street, Marylebone, London, W1G 9JH

Rosie Cooper Aesthetics Oxford

5 out of 5

From 15 Review(s)

Your award-winning cosmetic clinic in Oxfordshire. Winners of the WhatClinic Customer Service Award for the past ten years' running; Cosmetic Clinic of the Year 2017 (English Hair & Beauty Awards). ...[READ MORE]

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Raleigh Park Clinic, 45 Raleigh Road, Oxford, OX2 9AR

Nish Clinic

Nish Clinic is a Doctor led medical aesthetic and wellness clinic based in Thorpe bay, Southend -on-Sea , Essex. [READ MORE]

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204 The Broadway, Thorpe Bay, Southend-on-sea, SS1 3EU

Awaken clinic

5 out of 5

From 5 Review(s)

Dr. Steph France BDS is pleased to offer non- surgical facial aesthetics at Awaken clinic, based in St Neots, Cambridgeshire. This includes anti wrinkle treatments, dermal fillers, skin care, m...[READ MORE]

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23a Huntingdon St, St Neots, PE19 1BG

A Little Enhancement

5 out of 5

From 9 Review(s)

We are an official Allergan aesthetics clinic situated in a discrete location in Exmouth. We offer a wide range of anti ageing and skin treatments. We are nurse led and all Injectables are p...[READ MORE]

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14 High Street, Exmouth, EX8 1NP

Exthetics Facial Aesthetics

5 out of 5

From 10 Review(s)

Welcome to Exthetics, where we offer transformative skincare and non-surgical treatments. On the outskirts of Exeter, Devon, we are led by Anna Lee, a Harley Academy-trained Registered Nurse and I...[READ MORE]

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74 Cowick Hill, Exeter, EX2 9NJ


Rosmetics Skin Clinic is based in Bromsgrove, Worcestershire. Our clinic offers a wide portfolio of aesthetic treatments, along with an online shop which offers clients high quality products designed ...[READ MORE]

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53 Worcester Road, Bromsgrove, B61 7DN

Dorset Aesthetics

5 out of 5

From 6 Review(s)

Dorset Aesthetics is a nurse-led medical skincare clinic in Dorset. Combining two passions; nursing and skincare, we specialise in medical- grade treatments to help you look and feel your best, and d...[READ MORE]

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Wood Store 4, Ash Farm Courtyard, Ash Farm, Stourpaine, DT11 8PW