Profhilo vs HA Serums: What's the Difference?
Posted on June 24 2026
If you have been researching hyaluronic acid skin treatments, you have likely encountered both Profhilo and HA serums — and wondered whether they are doing similar things. The short answer is: no. The science and the delivery mechanism are fundamentally different.
Here is what you need to know.
The Basics: What Is Hyaluronic Acid?
Hyaluronic acid (HA) is a naturally occurring polysaccharide found throughout the body, with particularly high concentrations in the skin, joints, and eyes. In the skin, it plays a critical role in retaining water — a single HA molecule can hold many times its weight in water — and in supporting the structural matrix that keeps skin plump and resilient.
As we age, natural HA production declines. The result is skin that holds less moisture, feels less supple, and shows the early signs of volume loss. Both Profhilo and HA serums aim to address this deficit — but from entirely different positions.
HA Serums: Surface Hydration
Topical HA serums work by delivering hyaluronic acid to the outer layers of the skin. Applied correctly (typically to damp skin, sealed with a moisturiser to prevent transepidermal water loss), they provide meaningful surface hydration and a temporary improvement in skin texture and plumpness.
The key limitation is penetration. HA molecules — even low-molecular-weight fragments specifically engineered for better absorption — cannot meaningfully penetrate into the dermis (the deeper structural layer of the skin) through topical application. The benefit of an HA serum is real, but it operates at the epidermis.
A well-built topical routine takes this as far as the epidermis allows. The approach that works is layering: a humectant essence onto damp skin, then an occlusive step to hold it there. UNICORN TEARS pairs hydrolyzed collagen with adenosine as a first layer, and LUMINIZING II seals it with ceramides, cholesterol and fatty acids in the ratio the barrier itself uses. For patients who are unable or unwilling to undergo injectable treatments, a disciplined topical routine of this kind is the strongest available option.
Profhilo: Dermal Bio-Remodelling
Profhilo operates at an entirely different depth and through a fundamentally different mechanism.
Administered by injection directly into the dermis, Profhilo delivers a high concentration of HA — far higher than any topical product — where it can interact directly with skin cells. The specific structure of Profhilo's HA (a thermal bond between high- and low-molecular-weight forms, without chemical cross-linkers) allows it to spread through the tissue and stimulate the body's own production of collagen and elastin.
This is not hydration applied from outside. It is a biological stimulus delivered inside the skin, triggering a regenerative response.
The results are accordingly different from topical HA: improved firmness, elasticity, and skin quality — changes that emerge over weeks as the collagen stimulus takes effect, and that continue to develop after the initial injection.
Which Should You Choose?
They are not mutually exclusive — and for most patients actively managing their skin, both have a role.
Choose a topical hydration routine:
- As part of a daily skincare routine, regardless of whether you are receiving in-clinic treatments
- For surface hydration and to support skin barrier function
- If in-clinic treatments are not yet part of your plan or are being paused
Consider Profhilo at SW1 Clinic:
- If you are noticing reduced skin firmness, elasticity, or overall skin quality
- If topical hydration no longer seems sufficient to maintain the skin quality you want
- If you are in your late 20s or older and seeking a bio-stimulative approach to skin maintenance
Combine both:
- Medical-grade topicals support and prolong the results of in-clinic treatments
- A consistent routine of doctor-formulated topicals is the maintenance layer between in-clinic sessions
Browse the serum range at SW1 Shop, or book a consultation at SW1 Clinic to discuss a comprehensive skin quality plan.
Related reading: Best Sunscreens for Post-Treatment Skin (Singapore)
Shop the products
- UNICORN TEARS — a light first layer with hydrolyzed collagen and adenosine.
- REPLENISH — a mist with humectants that actually hold water.
- LUMINIZING II — ceramides, cholesterol and fatty acids for barrier repair.
Free delivery within Singapore on orders of S$100 and above.
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