Skin Boosters and Biostimulators Explained
A family of injectables that improve skin quality without changing your face shape. Here is how the main options differ and when each one is used.

In this article
The short answer
Skin boosters and biostimulators are injectables that improve the quality of your skin rather than its shape. They hydrate, firm, and stimulate collagen, giving a fresher, more luminous look without the volumising effect of a dermal filler. If your concern is skin quality rather than lost volume, this is usually the family of treatments to look at.
The category covers several different products that work in different ways, which is where the names can get confusing. Here is how they sort out.
Bioremodellers: Profhilo and Sunekos
Bioremodellers are based on hyaluronic acid, the same substance used in fillers, but in a form designed to spread through the skin rather than sit in one place as structure. Once placed, they draw in water to hydrate the skin and stimulate it to improve its own firmness and elasticity.
Profhilo is one of the best known. It uses a highly concentrated, stabilised hyaluronic acid and is typically given as a short initial course before moving to maintenance. Sunekos combines hyaluronic acid with amino acids, the building blocks the skin uses to make collagen and elastin. Both aim at skin quality, hydration, fine texture, and a healthy glow, rather than changing contour.
Biostimulators: collagen over time
Biostimulators work less by adding anything and more by prompting your own body to produce collagen over the following months. Radiesse, based on calcium hydroxylapatite, is a common example, and other collagen-stimulating products are used in the same way.
Because the change comes from new collagen forming gradually, results appear over weeks to months and can be longer lasting. These treatments suit people looking for a firmer, better-supported quality to the skin, delivered slowly and naturally.
How to choose between them
The honest answer is that the right product depends on your skin, your goals, and your history, which is why a consultation comes first. As a general guide:
- Dryness, dullness, and fine texture often respond well to a bioremodeller such as Profhilo or Sunekos.
- Loss of firmness and support may suit a collagen-stimulating biostimulator.
- Thin or delicate skin, including under the eyes, is sometimes better matched to polynucleotides, a related but distinct regenerative treatment.
These are not rigid rules, and plans often combine more than one approach over time. The aim is to choose the mechanism your skin actually needs rather than the product that happens to be most marketed.
What to expect
Treatments are quick, with most people returning to normal activities the same day. Small injection points or mild swelling can appear briefly. Because these treatments work with your own biology, the meaningful improvement builds over the weeks following a course, and results are kept up with occasional maintenance.
Every treatment here is carried out by Dr Elgey, a GMC-registered medical doctor, using only regulated products and the protocol best suited to your skin.
Bottom line
Skin boosters and biostimulators improve skin quality, not face shape. Bioremodellers such as Profhilo and Sunekos hydrate and refine, while biostimulators such as Radiesse build collagen over months. The skill is in matching the right product and protocol to your skin, which is a clinical decision made at a doctor-led consultation, not a one-size-fits-all package.


