The Complete Guide to Lip Flip Treatments

The lip flip has rapidly become one of the most requested aesthetic treatments in the UK. This offers a subtle enhancement that appeals to patients seeking natural-looking results. Unlike traditional lip fillers, which add volume, a lip flip uses small doses of botulinum toxin to relax the muscles around the upper lip. This allows it to gently roll outward and appear fuller. This comprehensive guide covers everything you need to know before booking your appointment.

What exactly is a lip flip?

A lip flip involves the precise injection of botulinum toxin (commonly known by brand names such as Botox, Azzalure, or Bocouture) into the orbicularis oris muscle, the circular muscle surrounding the mouth. By relaxing specific fibres of this muscle, the upper lip subtly flips outward, creating the appearance of a fuller, more defined lip without adding any volume.

Dr Emily Hartley, aesthetic medicine specialist and member of the British College of Aesthetic Medicine (BCAM), explains: “The lip flip is ideal for patients who feel their upper lip disappears when they smile, or those who want a very subtle enhancement before committing to dermal filler.”

How does a lip flip differ from lip filler?

Lip flip (botulinum toxin)

• Relaxes the muscle to reveal more of the lip’s natural vermilion border
• Does not add volume, only adjusts the lip’s position
• Uses 4-8 units of botulinum toxin
• Results last 6-10 weeks
• Takes 3-7 days to take full effect
• Typically costs £100-£200

Lip filler (hyaluronic acid)

• Adds physical volume to the lips
• Can reshape, define borders, and correct asymmetry
• Uses 0.5-1ml of hyaluronic acid dermal filler
• Results last 6-12 months
• Immediate results (final result after swelling subsides)
• Typically costs £200-£400

A 2021 study in the Aesthetic Surgery Journal found that combining a lip flip with a small amount of filler produced the highest patient satisfaction scores, as the treatments complement each other beautifully.

Who is a good candidate?

The lip flip works best for individuals who:

• Have a thin upper lip that curls inward when smiling
• Want a subtle, natural-looking enhancement
• Are nervous about filler and want to try a less invasive option first
• Have good existing lip volume but want more of the lip to be visible
• Wish to reduce the appearance of vertical lip lines

The treatment process

Before your appointment

Your practitioner will conduct a thorough consultation, assessing your facial anatomy, discussing your goals, and reviewing your medical history. You should avoid blood-thinning medications and supplements (aspirin, ibuprofen, fish oil, vitamin E) for 48 hours prior to treatment.

During the Procedure

The treatment itself takes approximately 10-15 minutes. Your practitioner will cleanse the treatment area, mark the precise injection points along the upper lip border, inject small quantities of botulinum toxin at 2-4 strategic points, and apply gentle pressure to minimise bruising.

Aftercare Guidelines

• Avoid touching or rubbing the treatment area for 4-6 hours
• Stay upright for 4 hours following treatment
• Avoid strenuous exercise for 24 hours
• Do not drink through straws for 2-3 days
• Avoid extreme heat (saunas, hot yoga) for 48 hours
• Be patient, full results develop over 5-7 days

Results and Timeline

Unlike dermal fillers, which show immediate results, the lip flip requires patience. The botulinum toxin begins to take effect within 2-3 days, with the full result visible at around day 7-10. The peak effect typically lasts 4-6 weeks before gradually wearing off.

“I always tell my patients to wait the full 10 days before judging their results,” advises Dr Hartley. “The gradual onset can actually be a benefit, it allows you to see the subtle change develop naturally.”

Potential side effects and risks

The lip flip is considered a low-risk procedure when performed by a qualified practitioner. Potential side effects include:

• Common: Minor bruising at injection sites, slight swelling for 24-48 hours
• Uncommon: Asymmetry (usually correctable at a review appointment)
• Rare: Difficulty drinking from a cup or pronouncing certain words (occurs when too much toxin is used)

Choosing a qualified practitioner

In the UK, botulinum toxin injections should only be administered by qualified medical professionals. When selecting a practitioner, verify their registration with the relevant professional body (GMC, GDC, NMC), specific training in facial aesthetics, and membership of recognised aesthetic bodies (BCAM, ACE, JCCP).

Frequently asked questions

Does a lip flip hurt?

Most patients report minimal discomfort, a brief pinching sensation at each injection point. The needles used are very fine (30-32 gauge), and the procedure is completed in under 15 minutes.

Can I get a lip flip and lip filler at the same appointment?

Yes, many practitioners offer combination treatments in a single session. The lip flip is typically performed first, with filler placed strategically to complement the enhanced shape.

Will a lip flip affect my ability to eat and speak normally?

When performed with the correct dosage by an experienced practitioner, a lip flip should not significantly affect eating or speaking. Some patients notice very minor changes for the first few days.

How often can I repeat the treatment?

The lip flip can be repeated every 8-12 weeks as needed. Regular treatments are safe, and some patients find that the muscle gradually requires less toxin to achieve the same effect.