Skin Boosters, Decoded: What They Are, How They're Marketed, and the Real Differences · Baudelaire Aesthetics
8 min read12 July 2026
Skin Boosters, Decoded: What They Are, How They're Marketed, and the Real Differences
A skin booster is an injectable that improves the skin's hydration, elasticity and texture, not its shape or volume. It is an umbrella for three types: hyaluronic acid bio-remodellers such as Profhilo (usually two sessions, four weeks apart), polynucleotides (three to four sessions), and amino-acid boosters like Jalupro. Head to head they perform comparably, with polynucleotides holding a slight edge on fine texture. None is a filler.
Dr Dana BeikiMPharm · PhD · Independent Prescriber Aesthetic medicine, Bath
By now you have seen the word attached to a bottle labelled "glass skin", to a friend who says her cheeks "just look wet in a good way", to a clinic promising a booster will take years off. The pitch has quietly slid from what these injectables actually do toward what they never claimed to do. People arrive asking for a skin booster when they mean plumper cheeks, or expecting one word to cover a hollow, a line and a dullness all at once. So here is the first thing to name plainly: a skin booster changes the quality of the skin, not the shape of the face. The "glass skin" video is selling you the surface. The treatment works underneath it, and only on the underneath.
There is a second thing the marketing sells, once you are past the glow: a rivalry between the types, the hydration one against the salmon-DNA one, each clinic certain its favourite wins. Put head to head in the same faces, they come out close, with polynucleotides holding a slight edge on fine texture. So the honest question is never which brand wins. It is which suits your skin, and often the answer is more than one.
This piece is the decoder for both: what a skin booster really is, and how to tell the types apart without the noise.
Why the word is so confusing
"Skin booster" is not one product. It is an umbrella that clinics have stretched over several different injectables, each with a different active ingredient, and then marketed as rivals so you feel you must pick a side. One month it is the hydration one, the next the salmon-DNA one, the next a brand name you have not heard of, each sold as the treatment the others wish they were. Underneath the names there are really only three ideas, and once you can see them, the rest becomes simple.
How skin boosters actually work
All of these are placed into the dermis, the living layer beneath the surface, and all of them work on the quality of the skin. Where they differ is the active, and what it asks the skin to do. There are three ideas, no more.
Hyaluronic acid supplies the material: it holds water so the tissue is better hydrated, and the stabilised form also nudges the collagen and elastin you already have. Polynucleotides signal it: purified DNA fragments that act on the fibroblast, the cell that maintains the dermis, prompting it to do more of its own repair; the signalling itself is understood from laboratory work rather than proven step by step in human skin, while the measured benefit in people is to skin quality. Amino-acid formulas feed it, pairing that hydration with glycine and proline, the raw building blocks of collagen. Supply, signal, feed. Every brand below is one of those three.
The invitation
However you begin, it starts with a conversation.
Book a consultation with Dr Beiki, or start free with an online assessment in your own time.
A skin booster is an injectable that improves the quality of the skin, meaning its hydration, elasticity and texture, rather than its shape or volume. It conditions the dermis from within and does not fill hollows or change facial structure.
It depends on the product. Profhilo is usually two sessions four weeks apart; polynucleotides three to four sessions two to four weeks apart; amino-acid boosters such as Jalupro around three weekly and Sunekos around four; and Juvederm Volite a single session. Your exact plan is decided at consultation.
Results are maintained by returning for treatment, usually every four to six months, after a short initial course. The number of sessions depends on the product: Profhilo is usually two, polynucleotides three to four, and a booster like Volite a single session. Skin quality is not permanent, so a booster is an ongoing course rather than a one-off.
There are two timescales. Some hydration and glow can show within a week or two of the first session, but the deeper change in skin quality builds over the full course and the weeks after it, and is usually at its best around a month after the last session. This is why boosters are given as a short course rather than a single appointment. Dr Beiki sets the schedule for your skin at consultation.
They involve small injections into the dermis, felt as brief pinches. Most people find it very tolerable, and fine needles with numbing where appropriate keep it comfortable. Minor bruising or small raised points can appear for a day or two.
They are well established and widely used. Side effects are usually temporary, such as small bruises, swelling or tenderness at the injection points. Safety depends most on proper assessment and a doctor placing the product.
Yes, for skin quality. In controlled studies, boosters improved hydration, elasticity and texture over a course of sessions, with the benefit building gradually rather than appearing at once. The hyaluronic acid and polynucleotide types carry the stronger evidence and perform comparably; amino-acid boosters have the thinnest evidence so far. What they do not do is add volume or change facial shape, which is filler's job.
Skin boosters condition the skin by improving hydration, elasticity and texture. Filler restores volume and changes facial shape. They do different jobs, so a booster will not fill a hollow and filler will not condition skin quality.
Head to head, they come out close. In a split-face trial around the eyes the two were comparable overall, with polynucleotide a slight edge on fine texture, pores and elasticity; a larger phase III trial found no significant difference in any measure. So for overall skin quality they are broadly comparable, and in practice they are often combined rather than chosen against each other. The right choice for your skin is best decided at consultation.
The consultation with Dr Beiki is free. Treatment cost depends on the product and the number of sessions, which is agreed at that consultation.
Most people return to normal activities the same day. You may notice small raised points at the injection sites that settle within hours to a day, and minor bruising or tenderness that can last a day or two. Dr Beiki will confirm what to expect for your treatment.
Here is what the marketing names actually are, so you can translate any clinic's menu.
Hyaluronic acid bio-remodellers, the "glow" ones (supply). Stabilised hyaluronic acid that spreads through the skin and holds water, supporting the collagen and elastin you already have. This is Profhilo, usually two sessions four weeks apart, and its firmer sibling Profhilo Structura; a lighter, single-session hydration booster such as Volite, repeated every six to nine months, sits here too. Seventy Hyal is the same idea under another name.
Polynucleotides, the "salmon-DNA" or "repair" ones (signal). Purified DNA fragments that signal the skin's own fibroblasts. The measured benefit in people is to skin quality; the signalling mechanism itself is understood from the laboratory rather than proven step by step in human skin. This is polynucleotides, and you will also see the names Plinest and Nucleofill; the usual pattern is a course of three to four sessions two to four weeks apart, then maintenance every three to six months.
Amino-acid boosters, often lumped in with the above (feed). Products such as Jalupro and Sunekos combine amino acids with hyaluronic acid to supply the skin's building blocks alongside hydration, over a short weekly course: Jalupro is around three weekly sessions, Sunekos around four, a week to ten days apart. They are a distinct class, worth naming as their own thing rather than filed under polynucleotides, which they are not.
And what is not a booster at all: filler. If a "booster" is being sold to you as a lift, a fuller cheek or a sharper jaw, that is dermal filler or structural work under a gentler word. Filler changes volume and shape; a booster does not. Confusing the two is the most common way people end up with a treatment they did not want.
At a glance
Booster
Type
Initial course
Top-up
Profhilo
Hyaluronic acid
2 sessions, 4 weeks apart
around every 6 months
Volite
Hyaluronic acid
a single session
every 6 to 9 months
Polynucleotides (Plinest, Nucleofill)
Polynucleotide
3 to 4 sessions, 2 to 4 weeks apart
every 3 to 6 months
Jalupro
Amino acid
around 3 weekly sessions
at consultation
Sunekos
Amino acid
around 4 sessions, 7 to 10 days apart
every 4 to 6 months
Your exact plan is set at consultation; these are the usual patterns, not fixed rules.
The real difference, honestly
That table answers the how. The harder question is the which, and here the honest answer surprises people.
The mechanisms are genuinely different, supply against signal against feed. The outcomes are not as different as the marketing suggests. When polynucleotide and hyaluronic acid have been put head to head in the same faces, they come out close. In a split-face trial around the eyes, overall aesthetic improvement was no different between the two; polynucleotide had a slight edge on roughness, pore refinement and elasticity, but dermal density was the same. In a larger phase III trial, there was no significant difference in any outcome measure between the two. And the amino-acid boosters, which often carry the most enthusiastic marketing, carry the thinnest evidence: the most recent systematic review rated the quality of the clinical data as very low.
So if you are asking which one is scientifically better, the honest answer is that for overall skin quality they are broadly comparable, with polynucleotides holding that small, real edge on fine texture. The larger difference, by far, is between having a proper course and having none.
The honest question is never which booster, but what your skin is short of: the water you can supply, or the repair you can only signal for. Read that right, and the product almost chooses itself.
Dr Dana Beiki
There is a further point the head-to-head framing hides. Because hyaluronic acid and polynucleotides work through genuinely different mechanisms, one supplying material and holding water, the other signalling the fibroblast to carry out its own repair, they are not really rivals. They act on different parts of the same problem, so used together they treat more of it than either does alone. This is why the two are increasingly combined, often with polynucleotides used first to prime the skin before or alongside a hyaluronic acid, an approach that expert consensus supports. The honest limit on that is worth stating plainly: it rests on the mechanism and on that consensus, not on a trial pitting the combination against a single product. But it follows the biology more closely than choosing one brand and calling it the winner.
How to choose
Because they are close, the choice is less about a winner and more about fit.
Your concern. Dryness, dullness and a loss of firmness lean toward hyaluronic acid, which has the strongest evidence. Fine texture, crepiness and thin, delicate skin, especially under the eyes, are where polynucleotides are often chosen and where they edged ahead. Amino-acid boosters suit someone who likes the building-block idea, with the honest caveat that the evidence is thinner.
The area. The gentler polynucleotides are a common first choice for the delicate skin around the eyes; the spreading hyaluronic acid suits broader hydration across the cheeks.
Together, not versus. In practice these are often sequenced or combined rather than pitted against each other. As the science above explains, that reads closer to the evidence than picking a winning brand.
And if your concern is really volume, a hollow, or a lift, none of these is your treatment, and none will lift significant skin laxity; that is a different conversation.
The one honest rule: it matters less which name is on the syringe than that someone reads your skin and chooses, or combines, for it. That is the whole point of the consultation.
If you are unsure whether your concern is quality or shape, or which of these is right for your skin, that is precisely the thing worth deciding out loud with someone who does this daily. A consultation with Dr Beiki is free, and it is there so you choose the right tool rather than the trending one.
My job is to give you back the skin that used to look after itself, so you look like you on a good day, not like the face in someone else's video. That is the whole aim, and it is enough.
If you would like to know which approach fits your skin, book a consultation and we will decide it together.
It is not a filler. It is stabilised hyaluronic acid that spreads through the skin to improve its hydration, elasticity and quality, for the tiredness that shows on a face that is not tired.
