What’s the Difference Between a Skin Booster and a Dermal Filler?

If you've been looking at treatments and can't quite work out what you need, you're not alone. Skin boosters and dermal fillers are both injectable, both use hyaluronic acid or related compounds, and both get talked about in the same breath online. But they do genuinely different jobs, and knowing the difference matters before you book anything.

The short answer

A dermal filler adds volume and structure, it's used to fill a specific area, like cheeks, lips, or the tear trough, and holds its shape where it's placed. A skin booster doesn't add volume in the same way, it's injected more superficially, in small amounts across a wider area, to improve the quality, hydration and texture of the skin itself.

Think of it as the difference between rebuilding a wall (filler) and improving the soil the whole garden grows in (skin booster).

Why skin quality treatments have become so popular

A lot of people come to me not because they want a different shape, but because their skin has stopped looking like their own. It's dull. It's lost its bounce. Makeup sits differently than it used to. This is especially common through perimenopause and menopause, when declining oestrogen genuinely changes the skin's barrier function, oil production, and collagen turnover, at a cellular level, not just on the surface.

That's exactly the gap skin boosters are designed to close.

What Sunekos actually is

Sunekos is the treatment I recommend more often than almost any other, and it sits firmly in the skin booster category rather than the filler category. It's an injectable combining amino acids and hyaluronic acid, and rather than sitting under the skin adding volume, it works to stimulate your own fibroblasts, the cells responsible for producing collagen, elastin and hyaluronic acid naturally.

In practical terms, it's rebuilding your skin's own architecture from within, rather than adding something on top of it.

A typical course is 3 sessions, spaced 2 to 4 weeks apart, with results building gradually and becoming most noticeable after the third session. Most people then have maintenance twice a year.

So which one do I need?

This is genuinely the most common question I get asked, and the honest answer is that most people benefit from thinking about both, not choosing one over the other:

• If your concern is volume loss, hollowing, or a specific area that's lost its shape or fullness, that's a filler conversation.
• If your concern is skin quality, dullness, dehydration, fine lines from texture rather than structure, or skin that's stopped "glowing" the way it used to, that's a skin booster conversation, and Sunekos is often where we start.
• Many of my patients end up doing both, at different points, as part of a longer-term plan, because volume and skin quality are separate problems that both contribute to how tired or unlike-yourself a face can look.

Why I don't lead with the biggest treatment first

My approach is built around subtlety and restraint, treating the face as a whole rather than chasing one concern in isolation. That usually means starting with what will make the most natural difference first, which for a lot of patients is skin quality, not volume. Nobody should walk out of a consultation having had more done than they actually needed.

Ready to find out what's right for you?

Every treatment plan starts with a proper skin consultation, never a guess. If your skin has stopped feeling like it belongs to you, or you're simply not sure whether you need a filler, a skin booster, or nothing at all yet, that's exactly the conversation worth having.

Book a no-obligation consultation with Dr Sarah Spencer at SAM Clinic, Lancing & the Spa at South Lodge, Horsham.

What's the main difference between a skin booster and a dermal filler? A dermal filler adds volume and structure to a specific area. A skin booster is injected more superficially across a wider area to improve hydration, texture and overall skin quality, without adding volume in the same way.

Is Sunekos a filler? No. Sunekos is a skin booster. It stimulates your own collagen, elastin and hyaluronic acid production rather than adding volume directly.

How many Sunekos sessions do I need? A typical course is 4 sessions, spaced 2 to 4 weeks apart, with results building gradually and most noticeable after the third and fourth session.

Can I have a skin booster and a filler at the same time? Many patients benefit from both, addressing volume and skin quality as separate but related concerns. This is assessed and planned at consultation.