Bunny Lines & Mid-Face Transitions: Nasal Line Relaxation with Upper Cheek Skin Boosters

When people research facial aesthetic treatments, attention commonly falls on forehead lines, frown lines or the nasolabial folds that run from the nose to the corners of the mouth. Yet a subtler set of lines — those that appear across the bridge and sides of the nose — can play a meaningful role in the overall appearance of the mid-face. These are often called bunny lines, and their interaction with the skin quality of the upper cheeks is a nuanced consideration in aesthetic medicine.

This article explains what bunny lines are, why they form, how nasal line relaxation with botulinum toxin is approached clinically, and how upper cheek skin booster treatments may be considered alongside this — particularly at the transition zone between the nose and the mid-face.

What Are Bunny Lines?

Bunny lines are the fine diagonal or transverse lines that appear across the sides of the nose — typically when a person scrunches, squints or laughs. In some individuals, they may also be visible at rest. They are caused by repeated contractions of the nasalis muscle, which runs along the sides of the nose. Over time, repeated muscular activity in this area can create more persistent lines in the overlying skin.

The term "bunny lines" is a colloquial description used widely in aesthetic practice. Clinically, they are sometimes referred to as transverse nasal lines or perinasal dynamic lines.

For most people, they are entirely harmless and a normal feature of facial expression. However, for some individuals — particularly those who have already addressed other dynamic lines on the upper face — bunny lines can become more noticeable and may become a focus of aesthetic concern.

Why Do Bunny Lines Form?

The nasalis muscle is responsible for compressing the nasal bridge and flaring the nostrils. Its repeated activation — which occurs naturally during facial expressions — gradually imprints lines into the skin above it.

Bunny lines may also become more prominent as a secondary effect of botulinum toxin treatment in adjacent areas. When the procerus muscle (between the brows) or the corrugator muscles (responsible for frown lines) are relaxed with botulinum toxin, the face may compensate through increased use of the nasalis muscle. This is a recognised pattern in aesthetic medicine, and it is one reason why bunny lines are increasingly considered alongside upper-face injectable treatments rather than in isolation.

Skin ageing also plays a role. As collagen and elastin reduce over time, the skin in this area becomes less able to spring back after repeated muscular movement, meaning lines may deepen and persist even when the face is at rest.

Nasal Line Relaxation with Botulinum Toxin

Botulinum toxin is a prescription-only medicine used in aesthetic medicine to temporarily reduce the activity of targeted muscles. When small, precise amounts are carefully placed into the nasalis muscle, the muscle's ability to contract is reduced, which may allow existing bunny lines to soften and may help prevent their further deepening with expression.

This treatment requires careful clinical assessment. The anatomy of the nasal area is complex, and there are several muscles and structures in close proximity. Appropriate placement is important to avoid unintended effects on neighbouring muscles — including those involved in lip movement — which is why this treatment should only be carried out by a suitably qualified and experienced clinician following an appropriate consultation.

It is worth noting that botulinum toxin treatment cannot guarantee the complete elimination of lines. Results vary between individuals depending on factors including skin condition, the depth of existing lines, muscle activity patterns, age and lifestyle. Some patients may see meaningful softening of lines; in others, improvement may be more modest.

Botulinum toxin is a prescription-only medicine in the UK. It cannot legally be advertised directly to the public as a cosmetic product. Any consideration of this treatment should follow a proper clinical consultation with an appropriately qualified prescriber who can assess individual suitability.

The Mid-Face Transition Zone: Why It Matters

One area that is sometimes overlooked in aesthetic planning is the transition between the nose and the upper cheek — a zone that includes the junction of the lower eyelid and upper cheek, the skin just lateral to the nose, and the upper cheek itself.

This region is particularly susceptible to age-related changes including:

Volume reduction, as fat compartments in the mid-face diminish over time
Skin laxity, as collagen and elastin reduce
Textural changes, including dullness, fine lines and uneven surface quality
Shadowing, which can appear as the mid-face loses projection

The appearance of bunny lines can be influenced by what is happening in this transition zone. Drier, thinner skin with reduced elasticity may show dynamic lines more readily. Addressing skin quality in the upper cheek can therefore be a complementary consideration when discussing nasal line concerns.

Upper Cheek Skin Boosters: What Are They?

Skin boosters are injectable treatments designed to improve the quality, hydration and texture of the skin rather than add structural volume. They typically contain hyaluronic acid — a substance that occurs naturally in the body and has strong water-retaining properties — delivered as a fluid or gel into the superficial layers of the skin.

Unlike volumising dermal fillers, skin boosters are not intended to reshape or project facial structures. Their purpose is to replenish skin hydration from within, which may improve:

Skin smoothness and softness
Surface texture and radiance
Fine line appearance
Overall skin quality in the treated area

Treatments such as Profhilo — a stabilised hyaluronic acid product — are designed to spread through the skin tissue after injection, delivering hydration across a broad area. Other injectable skin quality treatments use polynucleotides, diluted hyaluronic acid preparations or combinations of ingredients to support skin health.

For those researching what skin booster injections involve clinically, doctor-led skin booster treatment for hydration and texture support may provide useful background.

The upper cheek is a commonly treated area with skin boosters because of its prominence, its susceptibility to early ageing changes and its role in the overall appearance of the mid-face. Improving skin quality in this zone may help the skin at the nasal-cheek transition appear fresher and more resilient — which can complement, though not replace, targeted treatment of dynamic nasal lines.

Can Nasal Line Relaxation and Skin Boosters Be Combined?

In aesthetic practice, it is common to consider a combination of treatments that address different aspects of facial ageing or skin concern. Nasal line relaxation with botulinum toxin and skin boosters in the upper cheek are not mutually exclusive — they address different concerns through different mechanisms.

Botulinum toxin targets the underlying muscular activity causing dynamic lines
Skin boosters address the quality and hydration of the overlying skin

When considering a combined approach, a clinician will typically assess:

The individual's existing lines — whether dynamic (appearing with expression) or static (present at rest)
Skin quality and hydration levels in the mid-face and upper cheek
Overall facial anatomy and balance
Previous treatments and their outcomes
General health, medical history and any contraindications

A combined approach may be appropriate for some individuals but not for others. Treatment planning should always follow a thorough clinical assessment rather than a predetermined protocol.

For those interested in exploring combined facial aesthetic approaches, Profhilo treatment planning for integrated upper-face and mid-face rejuvenation offers context on how this particular skin booster is used clinically.

What Results Might You Expect?

It is important to approach aesthetic treatment with realistic expectations. Results vary significantly between individuals and depend on many factors.

From nasal line relaxation:

Dynamic bunny lines may soften or become less pronounced with expression
Static lines present at rest may improve to some degree, though deeper established lines may respond less fully
Results from botulinum toxin are temporary, typically lasting around three to four months, though this varies individually
Repeated treatment over time may help maintain a consistent improvement

From upper cheek skin boosters:

Skin hydration and texture may improve over a course of treatment
The skin may appear more luminous and feel softer
Fine surface lines may become less noticeable
Results are gradual and typically develop over several weeks after treatment
Maintenance treatments are usually recommended to sustain improvement

Neither treatment offers permanent results. Both require repeat treatments to maintain benefits.

Who May Be Suitable for These Treatments?

General suitability for nasal line relaxation with botulinum toxin or upper cheek skin boosters may include adults who:

Are in generally good health
Have realistic expectations of what treatment can achieve
Are not pregnant or breastfeeding
Have no known allergy to treatment components
Do not have active infection or skin conditions in the treatment area
Are not taking certain medications that may affect treatment safety or suitability

There are also contraindications and cautions that a qualified clinician will assess during consultation. Some individuals with certain neuromuscular conditions, autoimmune disorders or specific medication use may not be suitable candidates for botulinum toxin. Individual assessment is essential.

Suitability cannot be determined from general online information alone. A proper consultation with a qualified clinician is the appropriate starting point.

Potential Risks and Side Effects

As with all injectable treatments, there are associated risks and possible side effects that patients should understand before proceeding.

Common and generally temporary side effects may include:

Redness, bruising or swelling at injection sites
Tenderness in the treated area
Mild headache following botulinum toxin treatment

Less common but possible risks with botulinum toxin treatment in the nasal area:

Unintended muscle relaxation affecting lip movement or smile
Asymmetry
Temporary localised weakness in adjacent muscles

Less common but possible risks with skin booster injections:

Localised swelling or lumpiness that usually resolves
Bruising
Infection at the injection site (rare but serious)
Allergic reaction (uncommon)

Serious complications are uncommon when treatment is performed by an appropriately qualified practitioner, but they can occur. Vascular complications — where product inadvertently affects blood vessels — are a serious though rare risk with any facial injectable treatment. Practitioners should have appropriate training in recognising and managing such events.

Patients should always discuss risks fully during their consultation and ensure their clinician has the qualifications and experience appropriate for the treatment being considered.

Recovery and Aftercare Considerations

Recovery from both nasal line relaxation and upper cheek skin booster treatments is generally minimal, though individual experience varies.

After botulinum toxin treatment, general aftercare guidance typically includes:

Avoiding vigorous exercise for 24 hours
Avoiding lying flat or applying pressure to the treated area for several hours
Avoiding facial massage in the treated area
Following any specific clinician guidance regarding the injection sites

After skin booster treatment:

Mild swelling and redness at injection points is common and usually resolves within a day or two
Avoiding sun exposure and applying SPF is generally recommended
Avoiding swimming pools, saunas or steam rooms immediately after treatment

Aftercare guidance should always come from the treating clinician, as it may vary depending on the specific products used and individual circumstances.

When Should You Seek Professional Advice?

If you are considering any injectable facial aesthetic treatment, the appropriate starting point is a consultation with a qualified practitioner. This should include discussion of:

Your concerns and treatment goals
Your medical history, existing conditions and current medication
Previous aesthetic treatments and their outcomes
A thorough assessment of your facial anatomy
An honest discussion of realistic outcomes, risks and alternatives

If you experience unusual or concerning symptoms after any aesthetic treatment — including significant swelling, pain, skin colour changes or vision disturbance — seek urgent medical attention.

For those exploring injectable skin quality treatments more broadly, medical anti-wrinkle assessment for dynamic nasal expression lines may help clarify what to expect from an initial assessment.

Key Takeaways

Bunny lines are dynamic wrinkles on the sides of the nose caused by nasalis muscle activity; they are common and may become more noticeable after treatment of adjacent areas
Nasal line relaxation using botulinum toxin is a prescription-only treatment that may help soften these lines temporarily; it requires clinical assessment and must be carried out by a suitably qualified prescriber
Upper cheek skin boosters address skin quality and hydration in the mid-face transition zone and work differently from botulinum toxin treatments
A combined approach may suit some individuals, but treatment planning should always follow individual clinical assessment
Results vary between individuals; neither treatment offers permanent results, and realistic expectations are important
Risks exist with all injectable treatments and should be discussed fully with a qualified clinician before proceeding
Suitability cannot be reliably determined from online information; a proper consultation is essential

Frequently Asked Questions

What are bunny lines and why do they appear?

Bunny lines are the small diagonal or transverse lines that form on the sides of the nose, typically when you squint or laugh. They are caused by repeated contraction of the nasalis muscle. They may also become more noticeable after treatment of nearby muscles with botulinum toxin.

Can botulinum toxin treat bunny lines effectively?

In many cases, carefully placed botulinum toxin in the nasalis muscle can soften dynamic bunny lines. Results vary between individuals. Static lines that are present at rest may respond less fully than lines that only appear with expression.

How long do the results of nasal line relaxation last?

Results from botulinum toxin treatment typically last around three to four months, though this varies depending on individual metabolism, lifestyle, muscle activity and the amount used. Regular maintenance treatments are generally required to sustain results.

What are skin boosters and how are they different from dermal fillers?

Skin boosters are injectable hyaluronic acid treatments designed to improve skin hydration, texture and quality rather than add volume or reshape facial contours. Dermal fillers are typically used to restore volume or redefine facial structure. The two treatments serve different purposes and may be used together where clinically appropriate.

Is it safe to combine nasal line relaxation with skin boosters in the upper cheek?

These two treatments address different concerns through different mechanisms and may be considered together in some cases. Whether a combined approach is appropriate depends on individual assessment. A qualified clinician can advise on the safest and most suitable treatment plan for your specific circumstances.

Are there risks I should know about before having these treatments?

Yes. All injectable treatments carry risks, including bruising, swelling, asymmetry and, rarely, more serious complications. For botulinum toxin specifically, unintended muscle effects in adjacent areas are possible. These risks should be discussed thoroughly with your clinician before proceeding.

Who is not suitable for these treatments?

People who are pregnant, breastfeeding, have certain neuromuscular conditions, known allergies to treatment components, active skin infection in the treatment area or specific medical conditions or medications may not be suitable. A clinical consultation will determine individual suitability.

How do I find a qualified practitioner for these treatments in London?

In the UK, botulinum toxin is a prescription-only medicine and should only be administered following appropriate prescriber assessment. Look for practitioners with verifiable medical qualifications, appropriate aesthetic training and registration with relevant regulatory bodies. Avoid choosing practitioners based on price alone.

Conclusion

Bunny lines are a normal and common feature of facial expression, but for some individuals — particularly those managing other signs of facial ageing — they can become a focus of aesthetic concern. Understanding both the muscular origin of these lines and the role of mid-face skin quality provides a more complete picture of how they might be approached.

Nasal line relaxation with botulinum toxin and skin booster treatments in the upper cheek are distinct interventions that may, in certain cases, complement one another. Neither is a universal solution, and neither offers permanent results. As with all aesthetic treatments, individual anatomy, skin condition, medical history and realistic expectations should guide any decision-making.

The most important step is a thorough consultation with a suitably qualified clinician who can assess your concerns properly, explain what may realistically be achieved, and ensure that any proposed treatment is appropriate for you individually. Those researching non-surgical facial aesthetic options in London may also find it useful to explore advanced tweakment zones for bunny lines, gummy smiles, and dimpled chin movement as part of their broader research.

If you are uncertain whether aesthetic treatment is appropriate for your concerns, speaking with your GP or a qualified medical professional is always a reasonable and responsible starting point.

Medical disclaimer: This article is intended for general educational purposes only and does not constitute personalised medical advice, diagnosis or treatment. Always seek advice from a suitably qualified healthcare professional before considering any aesthetic or medical treatment.

Written Date: 9 November 2026 Next Review Date: 9 November 2027