What Is Profhilo and How Does It Work? A Plain-Language Doctor’s Guide (with Skin-Booster Comparisons)

By Dr Cindy Yang | Dr Cindy’s Medical Aesthetics, Singapore Aesthetic doctor with over 20 years of clinical practice in injectable skin quality treatments.

Patients arrive at Dr Cindy’s Medical Aesthetics asking about Profhilo more often than almost any other injectable in 2026. They have seen it on social media. They have read about it being different from filler. They have friends who have had it and friends who have heard mixed things. Most do not know exactly what it is, what it does, and how it compares with the other injectables their friend (or another clinic) suggested instead.

Profhilo is a useful, evidence-based skin-quality injectable for the right patient. It is also part of a wider category of treatments often described as “skin boosters” or “bio-stimulators” that includes Rejuran, Plinest, Linerase, and Xela Rederm. These are not the same molecule, do not work through the same mechanism, and produce different result profiles. Choosing between them, or combining them appropriately, is one of the more nuanced decisions in current aesthetic practice.

This article does two things. It explains what Profhilo actually is in plain language, and it places Profhilo alongside Rejuran, Plinest, Linerase, and Xela Rederm so a patient considering any one of them understands the wider menu before they decide. The aim is the same as the other articles in this library: a clearer picture before consultation, not a substitute for one.

What Profhilo actually is

Profhilo is an injectable preparation of hyaluronic acid, but it is engineered differently from the hyaluronic acid used in dermal fillers. The technology is called BAP (Bio Aesthetic Points), and the formulation combines two molecular weights of hyaluronic acid (high and low) cross-linked through a thermal stabilisation process rather than chemical cross-linkers.

The clinical effect is twofold. The hyaluronic acid acts as a deep hydrating reservoir in the dermis, drawing and holding water in a way that improves skin hydration over weeks. Separately, the formulation releases hyaluronic acid gradually as it is metabolised, which acts as a low-grade stimulus to fibroblasts to produce more collagen, elastin, and natural hyaluronic acid in the surrounding tissue. The result is improvement in skin quality, hydration, elasticity, and a subtle firmness that develops over the four to twelve weeks following the second of the two standard sessions.

Profhilo is delivered through a specific technique using five injection points per side of the face (the BAP technique), which is why the protocol is consistent across clinics that have been trained correctly. This is not a free-form injection of hyaluronic acid into wherever volume is wanted. The injection points are anatomically defined for safety (avoiding nerves and vessels) and for predictable diffusion through the dermis.

Profhilo is a skin-quality treatment, not a volumising filler. It is designed to improve the quality of the skin (hydration, elasticity, smoothness, fine lines, laxity at a mild level). It is not designed to add volume to areas that have lost contour, such as the cheeks or temples. Patients seeking volume restoration are usually better served by fillers (hyaluronic acid in cross-linked filler form) or biostimulators specifically designed for volume (Sculptra, Radiesse). Profhilo addresses a different goal.

Why “skin booster” is a loose term in 2026

Patients (and some clinics) use “skin booster” to refer to a wide variety of injectables: Profhilo, Rejuran, Plinest, Linerase, Xela Rederm, Sunekos, Volite, mesotherapy preparations, and others. These products differ in important ways:

• Active ingredient family. Hyaluronic acid (Profhilo, Volite), polynucleotides (Rejuran, Plinest), collagen (Linerase), HA plus succinic acid (Xela Rederm), or amino acid blends (Sunekos) are different molecules with different biological pathways.
• Mechanism of action. Hydration plus low-grade collagen stimulation (Profhilo), repair-pathway signalling (Rejuran’s salmon-derived PN), dermal scaffolding plus fibroblast activation (Plinest’s trout-derived PN), direct collagen scaffolding (Linerase), or tyrosinase blockade for pigmentation alongside dermal hydration (Xela Rederm) produce different clinical effects.
• Treatment depth and technique. Some products are injected at specific depths through defined techniques (Profhilo BAP, Linerase intradermal); others are distributed across the dermis through multi-point injection patterns; Xela Rederm uses an intradermal papular technique with selected concentrations matched to indication.
• Indication profile. Some are best for skin hydration, others for repair-supportive skin quality, others for textural and scar improvement, and Xela Rederm is positioned specifically for pigmentation and dermal quality.

The phrase “skin booster” is useful as a category label but not a treatment plan. The actual choice depends on the patient’s skin condition, the clinical goal, and the most appropriate molecule for that goal.

At Dr Cindy’s Medical Aesthetics, a consultation for skin quality concerns starts with identifying what the patient actually wants improved (hydration, fine texture, mild laxity, post-acne tissue quality, scar improvement, pigmentation) and matching the appropriate molecule to that goal. Profhilo is one of several tools, not the default answer.

The five injectables in this category, at Dr Cindy’s Medical Aesthetics

Profhilo: hyaluronic acid bio-stimulator (BAP technology)

Active ingredient: Hyaluronic acid (HA), engineered through thermal hybrid cross-linking to combine high-molecular-weight HA with low-molecular-weight HA.

Mechanism: Acts as a deep dermal hydrator (HA holds water in the dermis), and stimulates fibroblasts to produce collagen, elastin, and natural HA over the weeks following injection.

Best for: Skin laxity at a mild level, dehydrated skin, fine lines, overall skin quality improvement, the patient who wants subtle but visible improvement in skin texture and bounce. Particularly useful for patients in their late 30s to 50s where skin quality decline is the dominant concern rather than volume loss.

Treatment plan at Dr Cindy’s Medical Aesthetics: Two initial sessions four weeks apart (the standard protocol per the manufacturer’s clinical evidence). Maintenance every six to nine months.

Onset of visible result: Skin hydration and feel improve within one to two weeks; texture and elasticity changes develop over four to twelve weeks.

Duration: Six to nine months for a single course; with maintenance, the result is sustained as part of an ongoing skin quality plan.

Downtime: Minor. Five small injection points per side of the face (or two points per side of the neck), with possible redness, mild bumps, or bruising at the points lasting 24 to 48 hours. Most patients return to normal social activities the next day, with bumps subsiding within 48 hours.

Rejuran: PN bio-stimulator (salmon-derived polynucleotides)

Active ingredient: Polynucleotides (PN), derived from purified wild salmon DNA via the manufacturer’s DOT™ patent technology. Clarifying note for patients researching the brand: Rejuran’s separately marketed skincare topical range uses PDRN (a shorter-chain form of the molecule). The injectable formulations discussed here, used clinically in aesthetic practice, contain PN. The distinction matters for accurate product comparison.

Mechanism: Rejuran’s polynucleotides signal through tissue repair pathways when injected into the dermis, driving anti-inflammatory effects, fibroblast activation, collagen production, and improvement in oxidative stress markers in the surrounding tissue. The clinical effect is improved skin quality, reduced dermal inflammation, and modest collagen remodelling. The manufacturer positions Rejuran as supporting “favourable repair of skin that has been damaged from the external environment and energy-based device treatments.”

Best for: Patients with skin quality concerns including dullness, fine lines, post-inflammatory dermal thinning, and skin that is not actively scarred but is showing the cumulative effects of past inflammation (acne, eczema, prolonged UV exposure). Also widely used in acne scar protocols at Dr Cindy’s Medical Aesthetics, where its repair-pathway signalling complements the structural work of fractional laser and subcision (see Acne Scar Treatment Singapore: Matching the Right Treatment to Your Scar Type for the scar-treatment context).

Treatment plan at Dr Cindy’s Medical Aesthetics: Three to four sessions, spaced two to four weeks apart, with maintenance sessions thereafter as needed.

Onset of visible result: Skin quality changes develop progressively across the course, with visible improvement typically apparent after the second session.

Duration: Six to twelve months for a single course, depending on the patient’s skin condition and the maintenance protocol.

Downtime: Minor. Multiple micro-injection points across the face, with possible mild redness, tiny bumps, and pinpoint bruising for 24 to 48 hours.

Plinest: PN bio-stimulator (trout-derived polynucleotides)

Active ingredient: Polynucleotides (PN), longer-chain DNA fragments derived from purified trout DNA.

Mechanism: PN provides a dermal scaffolding effect (the longer-chain fragments support tissue structure during the injection’s slow degradation) while also stimulating fibroblast activity and collagen production. Plinest and Rejuran are both polynucleotide injectables, but they differ in source (trout vs wild salmon), chain length characteristics, and the formulation details that determine their clinical positioning. Plinest is often noted for its scaffolding contribution, particularly in patients with thinner or more aged dermal tissue; Rejuran is more often positioned for repair-supportive skin quality and post-inflammatory contexts. The two are clinically related and the choice between them is made on indication-specific grounds at consultation.

Best for: Patients with mild to moderate skin laxity, thinner dermal tissue (particularly in the periocular region), and skin quality concerns alongside textural changes. Also used in scar protocols where dermal scaffolding contributes to remodelling.

Treatment plan at Dr Cindy’s Medical Aesthetics: Three sessions spaced two to three weeks apart for the initial course, with maintenance every six to nine months.

Onset of visible result: Subtle skin quality changes within the first session, more visible improvement developing across the course.

Duration: Six to twelve months for the initial course, with the result extended through maintenance.

Downtime: Minor. Similar to Rejuran in terms of injection points and post-treatment appearance.

Linerase: collagen injectable

Active ingredient: Heat-denatured Type I collagen, in a formulation designed for intradermal injection.

Mechanism: Acts as a biological scaffold in the dermis. The injected collagen provides immediate scaffolding and signals fibroblasts to produce new Type I collagen through a structured repair pathway, improving dermal density and texture over the weeks following injection.

Best for: Patients with thinning dermal tissue, fine textural irregularities, and post-acne or surgical scar contexts where rebuilding dermal collagen is the goal. Also useful for skin quality work in patients who are not the right candidates for HA-based or DNA-based skin boosters (allergy considerations, specific clinical preferences).

Treatment plan at Dr Cindy’s Medical Aesthetics: A defined course (typically two to three sessions), with maintenance as part of the ongoing skin quality plan.

Onset of visible result: Dermal density changes develop over weeks to months, with visible improvement often apparent at the four to eight week mark.

Duration: Comparable to other dermal scaffolding treatments; results are sustained as part of a maintenance plan rather than as a one-off intervention.

Downtime: Minor. Possible mild redness, bumps, or bruising at injection points for 24 to 48 hours.

Xela Rederm: HA + succinic acid injectable for pigmentation and skin quality

Active ingredients: High molecular weight hyaluronic acid (non-cross-linked) combined with succinic acid (sodium succinate). The manufacturer’s terminology describes this as the “Double Synergic Effect Technology.” The 1.8% formulation contains 18 mg/ml hyaluronic acid and 16 mg/ml succinic acid.

Mechanism: Xela Rederm acts on two pathways at once. The hyaluronic acid component delivers deep dermal hydration, supports the cellular environment, and contributes to the recovery of the intercellular space architectonics. The succinic acid component binds to copper, which is the active site of the tyrosinase enzyme, and blocks tyrosinase activity through both binding affinity and an acidifying-antioxidant action. The result is reduced biosynthesis of new melanin alongside improved skin quality. This dual mechanism makes Xela Rederm the only injectable in the skin booster category specifically positioned for pigmentation as a primary indication.

Positioning: Xela Rederm is the WORLD’s first injection developed for improving skin pigmentation and is HSA-approved in Singapore. At Dr Cindy’s Medical Aesthetics it can be first-line for patients whose primary concern is pigmentation, used either on its own or in combination with topical and laser protocols for melasma, post-inflammatory hyperpigmentation, solar lentigines, and dark circles in the periorbital zone.

Best for: Patients with melasma, post-inflammatory hyperpigmentation, solar lentigines, ephelides, or café-au-lait macules. Also a strong option for periorbital dark circles where the underlying cause is dermal pigmentation plus reduced tissue hydration. Useful in combination with the structural pigmentation work of Dual Yellow laser, Pico, and topical cysteamine (Cyspera Original+).

Treatment plan at Dr Cindy’s Medical Aesthetics: Concentration is selected by indication and clinical assessment. The 1.1%, 1.8%, and 2.2% formulations are matched to the patient’s morphotype and pigmentation depth. For periorbital pigmentation and dark circles, the manufacturer-published protocol uses three sessions of Xela Rederm 1.8% at two-week intervals, with 0.5 cc per side delivered via intradermic papules separated by 5 mm. For melasma and broader face pigmentation, the morphotype-matched protocol is used (tired face, deformative, wrinkling, or muscular profile per the manufacturer’s standard).

Onset of visible result: Skin hydration changes are felt within the first two weeks. Pigmentation reduction develops progressively over the three-session course, with measurable melanin reduction documented in manufacturer post-marketing observation at the 2-week and 5-week follow-up points.

Duration: Sustained as part of an ongoing pigmentation control plan, combined with topical cysteamine (Cyspera Original+), daily SPF 50 with iron oxide, and oral photoprotection (Crystal Tomato + Heliocare). See Melasma Treatment Singapore: Lasers, Topicals, and What Actually Works in 2026 for the full pigmentation protocol context.

Downtime: Minor. Multiple intradermal papules at the treatment site, with possible mild redness, tiny bumps, and pinpoint bruising for 24 to 48 hours. Similar to other skin booster injection profiles.

Comparison: which one for which patient

The five products differ in important ways. The simplified comparison below is a starting point, not a treatment plan.

These five products are not the entire skin booster category. There are HA-based skin hydrators (Volite, Restylane Skinboosters), amino acid blend products (Sunekos), and others. The five discussed here are the most clinically relevant in current Singapore practice and the most commonly compared at consultation.

What they share, what they don’t

What all five share:

• Skin quality improvement (in some form) as a clinical effect, not volume restoration.
• Multi-session courses rather than single-treatment results.
• Maintenance as part of long-term care.
• Limited downtime (24 to 48 hours of mild effects at injection points).
• Minimal risk profile when injected by a trained operator using regulated products.
• The need for careful patient selection: not every patient benefits, and some patients should be referred to different treatments (filler for volume, laser for surface pigmentation, surgery for severe laxity).

What they don’t share:

• The molecular pathway. Hyaluronic acid biology, polynucleotide biology, collagen scaffolding biology, and the tyrosinase-blocking pathway of succinic acid are different. The downstream effects are different.
• The injection technique. Profhilo’s BAP technique is anatomically defined and standardised; Rejuran, Plinest, and Linerase use multi-point dermal injection patterns that are more flexibly distributed; Xela Rederm uses intradermic papules separated by defined spacing.
• The strongest indications. Profhilo for hydration and mild laxity; Rejuran for repair and skin quality after past inflammation; Plinest for scaffolding-led skin quality with mild laxity; Linerase for dermal density; Xela Rederm for pigmentation (the only product in this group with pigmentation as a primary indication and HSA approval for that use).
• The role in scar treatment. Profhilo and Xela Rederm are not primary scar treatments; Rejuran, Plinest, and Linerase play roles in scar protocols, particularly when combined with structural treatments like subcision and fractional laser.
• The cost profile. Pricing varies by clinic and by the specific product; the five are not directly equivalent on cost.

Combinations: when one is not enough

Combinations are often more appropriate than a single product. Some common patterns at Dr Cindy’s Medical Aesthetics:

Profhilo plus Rejuran (or Plinest). A patient with both general skin quality decline (hydration, mild laxity) and a history of inflammation or thinner dermal tissue benefits from Profhilo’s HA-based hydration and the PN-derived repair signalling from Rejuran or Plinest. The two are typically not injected in the same session; sessions are spaced one to two weeks apart.

Xela Rederm plus topicals and laser (the pigmentation triad). For patients whose primary concern is pigmentation, Xela Rederm sits inside a structured combination: topical cysteamine (Cyspera Original+) for daily melanin control, Dual Yellow laser for the vascular and surface-pigment components, and Xela Rederm for the dermal-quality and tyrosinase-blockade contribution. Oral photoprotection (Crystal Tomato and Heliocare) and topical SPF 50 with iron oxide are part of the same daily foundation.

Xela Rederm plus Profhilo or PN. For patients with both pigmentation and broader skin quality concerns, Xela Rederm pairs naturally with Profhilo (for hydration and skin quality) or Rejuran/Plinest (for repair signalling and scaffolding). Sessions are spaced rather than combined, and the protocol is matched to which concern is dominant.

Profhilo plus filler. A patient with both volume loss and skin quality decline needs filler for the volume and Profhilo for the skin quality. The two address different goals and are complementary rather than substitutes.

Skin boosters plus laser. Combination protocols where a laser session (fractional thulium, Pico, Dual Yellow) addresses pigmentation or surface texture, and an injectable session addresses dermal quality, can produce additive skin quality improvement.

Skin boosters plus skin tightening. Patients with mild to moderate laxity often benefit from a combination of structural treatment (Ultherapy, Thermage, RF Microneedling) for the laxity component and a skin booster for the dermal quality component. See Ultherapy vs Thermage vs RF Microneedling for the tightening side of this combination.

The combination is determined at consultation based on what the patient is trying to address and what the clinical assessment finds.

Reframing scars vs skin quality

A clarifying note worth making explicitly: at Dr Cindy’s Medical Aesthetics, both Rejuran and Plinest are widely used in acne scar protocols, where they are typically combined with subcision and fractional laser to support dermal repair after structural intervention. Earlier articles in this content library, including Acne Marks vs Acne Scars and Acne Scar Treatment Singapore, describe these uses in detail.

This article reframes the same molecules in the context of skin quality and the wider skin booster category. Both framings are clinically accurate. The molecule is the same; the indication and the protocol are different. Patients with active scarring concerns should refer to the scar-treatment articles for the structural protocol; patients without scarring who are interested in skin quality, hydration, mild laxity, or pigmentation should focus on the skin booster framing in this article. Patients with both concerns will find that the consultation addresses both contexts in a single treatment plan.

What to expect at a Dr Cindy’s Medical Aesthetics consultation for skin boosters

A consultation begins with an assessment of skin quality concerns: hydration, texture, elasticity, fine lines, mild laxity, post-inflammatory residue, pigmentation, scar context if relevant. Photographs are taken, the dermal quality is assessed clinically, and the patient’s goals are clarified.

The recommendation is then matched: which of the products (or combination) addresses the actual concerns, what the protocol looks like, what the timeline and cost are, and what maintenance looks like after the initial course.

You will leave the consultation knowing:

• Whether your skin quality concerns are best addressed with a skin booster, or whether a different category of treatment (filler, laser, tightening) is more appropriate
• Which molecule(s) match your specific skin condition
• What the realistic timeline and outcome look like
• What maintenance involves
• How the cost compares across the appropriate options

You do not need to arrive having decided on a product. The decision is informed by the assessment, not made beforehand.

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Frequently asked questions

Is Profhilo a filler? No. Profhilo is a hyaluronic acid bio-stimulator that improves skin hydration and quality. It does not add volume in the way that cross-linked HA fillers do. Patients who want to fill cheek hollows or restore lost volume in the temples need a different product. Patients who want better skin quality, hydration, and mild firmness benefit from Profhilo.

What is the difference between Profhilo and Rejuran? Profhilo is hyaluronic acid (BAP technology); Rejuran’s injectable line is polynucleotides (PN, wild salmon-derived, processed through the manufacturer’s DOT™ patent technology). Different molecules, different mechanisms, different best uses. Profhilo is stronger on hydration and overall skin quality; Rejuran is stronger on repair-pathway support, post-inflammatory skin, and scar protocols. They can be used together, in separate sessions, when the patient’s concerns warrant both. (Note: Rejuran also markets a separate range of topical skincare products that use PDRN, a shorter-chain form of the same molecule family. The clinical injectable described here is the PN formulation.)

What is the difference between Rejuran and Plinest? Both injectable lines are polynucleotide (PN) formulations, but from different sources and with different formulation characteristics. Rejuran is wild salmon-derived PN, manufactured via the DOT™ patent technology; Plinest is trout-derived PN. Their molecular profiles, chain-length characteristics, and clinical positioning differ, Rejuran is more often used for repair-pathway support and post-inflammatory skin, while Plinest is more often used for dermal scaffolding in patients with thinner or more aged tissue. The choice between them is made on indication at consultation, not on a single “which is better” comparison. (A separate point of confusion in online sources: Rejuran also sells a topical skincare range that uses PDRN, a shorter-chain form. PDRN is not what is being injected when patients have a Rejuran clinical session.)

What is Xela Rederm and how is it different from the other skin boosters? Xela Rederm is the WORLD’s first injection developed for improving skin pigmentation, and it is HSA-approved in Singapore. It combines hyaluronic acid with succinic acid in a non-cross-linked formulation, available in three concentrations (1.1%, 1.8%, 2.2%). The succinic acid component blocks the tyrosinase enzyme that drives melanin synthesis, while the hyaluronic acid delivers dermal hydration. The clinical positioning is different from Profhilo (hydration + skin quality), Rejuran or Plinest (PN, repair and scaffolding), and Linerase (collagen scaffolding): Xela Rederm is the only injectable in this group with pigmentation as a primary indication. At Dr Cindy’s Medical Aesthetics it can be first-line for patients whose main concern is pigmentation.

How many sessions of Profhilo do I need? The standard protocol is two sessions, four weeks apart, then maintenance every six to nine months. Most clinical evidence supports this protocol; deviating from it (single session, longer intervals) tends to produce less consistent results.

Can I do Profhilo if I have fillers? Yes, in most cases. Profhilo is delivered through a defined injection technique that targets the dermis, which is above the depth where most fillers sit. Filler results and Profhilo results are different and complementary; the two can coexist in a treatment plan. Timing is decided at consultation.

Are skin boosters safe in pregnancy? Most aesthetic injectables, including the products discussed here, are not used during pregnancy or breastfeeding. Active treatment is typically deferred until after weaning. This is discussed at consultation if relevant.

What is the downtime for Profhilo, Rejuran, Plinest, Linerase, or Xela Rederm? All five have minimal downtime. Possible mild redness, small bumps, and pinpoint bruising at injection points for 24 to 48 hours. Most patients return to normal social activities the next day. Strenuous exercise, heat exposure (sauna, steam, hot yoga), and pressure on the injection sites are typically avoided for 24 to 48 hours.

Are these treatments approved in Singapore? Profhilo, Rejuran, Plinest, Linerase, and Xela Rederm are products sourced through registered medical channels in Singapore. The Health Sciences Authority regulates aesthetic injectables; products obtained from non-medical sources (online direct-to-consumer suppliers, unregistered clinics) carry significant safety risks. At Dr Cindy’s Medical Aesthetics, all injectables are sourced through HSA-compliant channels. Xela Rederm in particular carries HSA approval specifically for skin pigmentation.

How do I know which skin booster is right for me? The honest answer is that you should not decide alone. The choice depends on a clinical assessment of your skin condition, your concerns, and the most appropriate molecular pathway for your goals. A consultation is where this is determined. Arriving with a preference (or having read about a specific product) is fine; the consultation will either confirm the match or explain why a different option is more appropriate.

What if my friend had Profhilo and was not impressed? A patient who is not the right candidate for a treatment will usually be unimpressed by the result regardless of how well the treatment was performed. Profhilo is a skin quality treatment, not a volume or wrinkle treatment. Patients who arrive expecting filler-like results from Profhilo are usually disappointed. Patients who arrive expecting subtler skin quality improvement, with a 4 to 12 week timeline, generally see what they expected. The matching of expectation to treatment is part of the consultation.

Is Profhilo worth the cost? For the right patient, yes. For the wrong patient, no. The price is meaningful, and patients who pay for skin quality improvement and receive it usually find the value reasonable. Patients who pay for skin quality improvement and were actually looking for volume or wrinkle treatment usually do not. The clinical match is what determines value.

A clearer view of skin boosters

The skin booster category has expanded faster than patient understanding of what each product actually does. Profhilo, Rejuran, Plinest, Linerase, and Xela Rederm are different molecules with different mechanisms, suited to different patients. The clinical work is the matching: what your skin actually needs, which product addresses it, and how the protocol is structured. At Dr Cindy’s Medical Aesthetics, that is the purpose of the consultation.

Related reading:

• Ultherapy vs Thermage vs RF Microneedling: Which Skin-Tightening Treatment Is Right for You?
• Melasma Treatment Singapore: Lasers, Topicals, and What Actually Works in 2026 (for the pigmentation context of Xela Rederm)
• Acne Scar Treatment Singapore: Matching the Right Treatment to Your Scar Type (for the scar context of Rejuran and Plinest)
• Acne Marks vs Acne Scars: How to Tell What You Have and What Actually Treats It