Dermal fillers are one of the most popular non-surgical treatments in the UK, yet they are also one of the most misunderstood. Before you book anything, you deserve a straight answer to one question: what do dermal fillers actually do to your face, and where do they stop?
What are dermal fillers, exactly?
Dermal fillers are injectable gels, most commonly made from hyaluronic acid (HA), a substance your body already produces naturally. HA attracts and holds water molecules, which is why it is used to add volume, definition, and hydration beneath the skin's surface.
At Snatch & Glow, dermal fillers start from £180 and are administered by trained aesthetic practitioners in appointments that take around 30 minutes. Results last between 9 and 12 months depending on the area treated, your metabolism, and how your body processes the product.
The key word in all of this is injectable. Fillers work by physically occupying space under the skin. They do not trigger collagen production in the same way some other treatments do. They fill. That sounds simple, but the effects of that filling, when placed correctly, go far beyond just adding volume.
What dermal fillers actually do to your face
They restore lost volume
From your mid-twenties onward, your face loses fat, bone density, and collagen at a measurable rate. This is why faces that once looked full and structured begin to look hollowed, sunken, or flat. Dermal fillers replace that lost volume in the areas that have deflated.
Cheek fillers, for example, restore the lifted, rounded contour that sits below the eye and above the jaw. Without that volume, the skin above and below it droops, creating under-eye hollows and nasolabial folds. Replacing the volume at the cheek addresses all three problems at once.
They reshape and define features
Fillers are not only for replacing what was lost. They can also build structure that was never there, or refine features that have always bothered you.
Lip fillers add volume and shape to the lips, improve the lip border definition, and correct asymmetry. Jawline fillers create a sharper, more angular jaw profile without surgery. Chin fillers lengthen or project the chin to improve facial balance from the side.
This is where placement matters enormously. A well-placed 0.5ml in the right spot produces a more dramatic and natural result than 2ml in the wrong one.
They smooth lines caused by volume loss
Some lines on your face are caused by muscle movement. Dermal fillers do not fix those. But lines caused by skin folding over hollow, deflated tissue, such as nasolabial folds and marionette lines, respond well to filler placed strategically in the areas that are causing the fold.
Filling directly into a line can work in some cases, but the smarter approach is to address the structural cause of the line, not just the line itself.
Dermal fillers from £180 at Snatch & Glow. Results in one 30-minute appointment, lasting 9 to 12 months.
They create a lifting effect
When volume is placed correctly in the mid-face or along the jawline, it mechanically lifts the tissue above and below it. This is not the same as a surgical facelift, but it is a real, visible lift that shows up immediately after treatment.
This is also why the order and placement of filler matters so much. Practitioners at Snatch & Glow assess the whole face before treating any single area, because treating one zone in isolation often produces a less natural result than working with the full structure.
They hydrate from the inside
Because hyaluronic acid is hygroscopic, meaning it draws water to itself, dermal fillers have a secondary hydration effect in the tissue around them. The skin above a freshly filled area often looks plumper and more luminous, not just because of the volume underneath, but because of the water retention the HA creates.
What dermal fillers cannot do
This matters just as much as what they can do. Dermal fillers are often marketed as a fix for everything, and that is not honest or accurate.
They cannot tighten loose skin
If you have skin laxity, meaning the skin itself has lost elasticity and is hanging loosely, filler will not tighten it. In fact, adding volume under loose skin without addressing the skin quality can make things look worse, not better. Treatments like PDO thread lifts, Profhilo, or microneedling are better options for skin tightening.
They cannot remove deep dynamic lines
Lines caused by repeated muscle movement, like forehead lines, frown lines, and crow's feet, are not caused by volume loss. They are caused by the muscle contracting beneath the skin thousands of times a day. Anti-wrinkle injections address those, not dermal fillers. Both treatments are available at Snatch & Glow, and many people benefit from both.
They cannot replace a surgical result
A rhinoplasty changes the bone and cartilage of the nose. A facelift removes and repositions skin and tissue. Dermal fillers work within the existing structure. They improve what is there. They do not fundamentally rebuild it. If someone's expectation is a surgical outcome from an injectable treatment, that is a conversation that needs to happen before any product goes near their face.
They cannot fix poor skin texture or pigmentation
Uneven skin tone, pigmentation, acne scarring, and rough texture are skin-level issues. Dermal fillers sit deeper than the skin surface and do not address those concerns. Skin peels, Profhilo, or microneedling are the right tools for texture and tone.
Which areas can you treat with dermal fillers?
At Snatch & Glow, dermal fillers are used in the following areas:
- Lips - volume, shape, and border definition
- Cheeks - volume restoration and lifting
- Jawline - definition and sharpening
- Chin - projection and balance
- Nasolabial folds - the lines from nose to mouth
- Marionette lines - the lines from corners of mouth downward
- Under-eye (tear trough) - hollowing beneath the eyes
- Non-surgical rhinoplasty - reshaping the nose without surgery
- Temples - volume restoration in the upper face
The most natural-looking results come from treating the face as a whole, not just fixing the one thing that bothers you most.
How long do dermal fillers last?
Most hyaluronic acid fillers last between 9 and 12 months. Some areas, like lips, metabolise product faster because of the movement in the area. Cheeks and jawline tend to hold filler longer. Factors like your metabolic rate, exercise habits, and the product used all play a role.
Because HA fillers are dissolvable with an enzyme called hyaluronidase, they can be adjusted or reversed if you are unhappy with a result. That reversibility is one of the reasons HA remains the gold standard for facial filler treatments.
Is there downtime after dermal fillers?
Most people return to normal activities the same day. Swelling and bruising are the most common side effects and typically resolve within 3 to 7 days. Lips tend to swell more than other areas in the first 24 to 48 hours, so the final result is not fully visible until that settles.
Avoiding alcohol, intense exercise, and excessive heat for 24 hours after treatment reduces the risk of swelling and bruising.
Frequently asked questions about dermal fillers
Do dermal fillers hurt?
Most dermal fillers contain lidocaine, a local anaesthetic, mixed into the product. A topical numbing cream is also applied before treatment. Most people rate the discomfort as mild, and the treatment takes around 30 minutes from start to finish.
Can you feel dermal fillers under your skin?
In most areas, no. Lip filler is the one exception where some people notice a slight firmness in the first couple of weeks. This softens as the product integrates with the surrounding tissue.
What happens when dermal fillers wear off?
Your face returns to how it looked before treatment. HA filler breaks down naturally and is absorbed by the body. You do not end up looking worse than before, just back to your baseline.
Can anyone get dermal fillers?
Dermal fillers are not suitable during pregnancy or breastfeeding, for anyone with certain autoimmune conditions, or for anyone taking blood thinners without medical approval. A consultation at Snatch & Glow covers your full medical history before any treatment is agreed.
How much filler do I actually need?
This depends entirely on your anatomy, the area being treated, and the result you want. Some people achieve the result they want from 0.5ml in one area. Others benefit from a multi-area approach. There is no universal answer, which is why a proper in-person assessment matters more than any online guide.
Book your dermal filler treatment at Snatch & Glow
If you have been thinking about dermal fillers and want a straight conversation about what they can realistically do for your face, Snatch & Glow is ready for that conversation. Browse the full range of treatments at snatchandglow.co.uk/pages/treatments, or skip straight to the call and get your questions answered by someone who knows exactly what they are talking about. Book a free 15-minute call and find out what dermal fillers can do for your face specifically.
