Injectables: Botox and Dermal Fillers Explained

Injectables are among the most widely used treatments in aesthetic medicine — but they are also among the most misunderstood. Botox and dermal fillers are often grouped together, used interchangeably in conversation, and surrounded by misinformation from social media. In practice, they are fundamentally different treatments that work in different ways, address different concerns, and suit different patients.

This page explains what each treatment actually does, how they differ, and what a conservative, medically guided approach to injectables looks like in practice.

What Are Injectables?

Injectables are treatments delivered beneath the skin using a fine needle or cannula. In aesthetic medicine, the two main categories are anti-wrinkle treatments — commonly known as Botox — and dermal fillers. While both are administered by injection, they work on entirely different structures within the face and are used to address different types of concerns.

Understanding the distinction between the two is important before considering either. A treatment plan that uses the wrong approach for a given concern — or combines them without clear clinical reasoning — tends to produce results that look less natural over time.

Botox: Anti-Wrinkle Treatments

Botox is a purified protein that temporarily reduces the signal between nerves and muscles. When injected in small, precise amounts into specific facial muscles, it softens the movement that causes dynamic lines — the lines that form from repeated expression, such as frown lines between the brows, forehead lines, and crow’s feet around the eyes.

It does not freeze the face, fill lines, or change facial structure. At the right dose, placed correctly, the result is a face that moves naturally but with less intensity — lines soften, expressions remain readable, and the overall effect is one of looking rested rather than treated.

• What it addresses: Dynamic lines caused by muscle movement — frown lines, forehead lines, crow’s feet, and in some cases brow position and jaw tension
• How long it lasts: Typically 3 to 4 months, though this varies with individual metabolism, muscle strength, and treatment history
• What it does not do: It does not restore volume, treat static lines at rest, or address structural facial changes

Botox is one of the most studied substances in aesthetic medicine and has a well-established safety profile when used by a medically trained practitioner. The skill lies in dose and placement — both of which require a thorough understanding of facial anatomy and individual muscle behaviour. View Botox on the services page →

Dermal Fillers

Dermal fillers are injectable gels — most commonly made from hyaluronic acid, a substance naturally found in the skin — used to restore volume, soften deep lines at rest, and support areas where the face has lost structural definition over time. Unlike Botox, which works on muscle movement, fillers work on structure and volume.

A natural ageing process involves the gradual loss of facial fat, bone, and collagen — changes that create hollowing under the eyes, flattening of the cheeks, deepening of folds, and loss of jawline definition. Fillers can be used to address these changes conservatively, restoring a sense of support and balance without dramatically altering the way a face looks or moves.

• What it addresses: Volume loss in the cheeks, hollowing under the eyes, lip definition and hydration, nasolabial folds, marionette lines, chin and jawline structure
• How long it lasts: Typically 9 to 18 months depending on the area treated, the product used, and individual metabolism
• An important safety feature: Hyaluronic acid fillers can be dissolved using an enzyme called hyalase if needed — providing a layer of reversibility not available with all aesthetic treatments

As with Botox, the result of well-placed filler should not look like a procedure — it should look like a more rested, supported version of the patient’s own face. A conservative approach, using less product and building gradually over time, consistently produces the most natural and sustainable outcomes. View dermal fillers on the services page →

Botox vs Dermal Fillers: The Key Difference

The simplest way to understand the difference is this: Botox manages movement, fillers restore structure. They address different causes of facial change — one treats what the muscles are doing, the other treats what the tissues have lost. Many patients benefit from both at different stages, but the decision about which is appropriate, and when, should always be based on a proper assessment rather than assumption.

• Dynamic lines (caused by muscle movement, visible when the face is animated) → Botox
• Static lines (present at rest, caused by volume loss and skin changes) → may benefit from filler or skin quality treatments
• Volume loss and hollowing (structural changes from fat and collagen reduction) → dermal fillers
• Facial definition (jawline, chin, cheek contour) → dermal fillers

Radiesse: Collagen-Stimulating Filler

Radiesse is a dermal filler that works differently to hyaluronic acid products. Rather than simply adding volume that gradually breaks down, Radiesse uses calcium hydroxylapatite microspheres to provide immediate structural support while also stimulating the body’s own collagen production over time. This dual action — instant lift with long-term regenerative benefit — makes it particularly useful for structural areas such as the cheeks, jawline, and hands.

Because Radiesse stimulates collagen, it addresses not just the appearance of volume loss but some of the underlying structural causes of it. Results typically last up to 18 months. View Radiesse on the services page →

A Natural Approach to Injectables

The most common concern patients raise before considering injectables is the fear of looking overdone. This is a legitimate concern — and one that is directly addressed by the way treatment is approached here. The goal of every injectable treatment at Dr Marian’s practice is to support the face rather than change it: to preserve natural movement, respect individual anatomy, and use the minimum effective amount to achieve a result that looks genuinely like the patient, rather than a procedure.

This means starting conservatively, building gradually, and reassessing at each appointment rather than applying a standard formula. It also means being willing to recommend against treatment when it is not appropriate — because the best results come from the right treatment at the right time, not from always doing more.

Is This Right for You?

Injectable treatments may be worth considering if you have specific concerns about dynamic lines, volume loss, or facial balance that have become noticeable and are something you would genuinely like to address. They are not appropriate for every patient or every concern, and a consultation is always the right starting point before any recommendation is made.

During a consultation, your facial anatomy, skin condition, medical history, and treatment goals will all be assessed before any approach is suggested. If you would like to discuss whether injectables are appropriate for you, book a consultation here.

Articles by DrMarian