Injectables
Skin Booster
Injectable hydrating treatments used to support skin quality and hydration.
Free consultation, no obligation.

- 15-30 min
- Typical session time
- A short course, then maintenance
- Typical sessions
- 1-2 days
- Downtime
On this page
In brief
Skin boosters are injectable treatments that deliver hydrating ingredients into the skin. Which product suits your skin, and whether an injectable is the right route for what is bothering you, is decided by a doctor at consultation.
Results from Kaiteki patients
Before and after photos of patients treated at Kaiteki for pigmentation, fine lines & wrinkles, dark eye circles and aging. A plan may combine more than one treatment.
10 photos · tap one to enlarge
Facial pigmentation, before and after a course of treatment at Kaiteki
Forehead lines, before and after treatment at Kaiteki
Under-eye area, before and after a course of treatment at Kaiteki
Skin tone and texture, before and after a course of treatment at Kaiteki
Facial pigmentation, before and after a course of treatment at Kaiteki
Forehead lines, before and after treatment at Kaiteki
Under-eye hollowing, before and after treatment at Kaiteki
Overall skin quality, before and after a course of treatment at Kaiteki
Uneven tone on the cheek, before and after a course of treatment at Kaiteki
Frown lines between the brows, before and after treatment at Kaiteki
Photographs of Kaiteki patients, published with consent. Individual results vary and are not guaranteed. These images are not a promise of outcome. A doctor will assess whether any treatment is suitable for you.
What is a skin booster?
A skin booster is an injectable treatment that places hydrating and skin-conditioning ingredients into the skin to support its overall quality. Because it is an injectable, it is performed by a doctor.
How is a skin booster different from a filler?
A filler is placed to add volume or change contour: a fuller cheek, a defined chin, a corrected hollow. A skin booster is not. It is delivered as small amounts through a series of fine micro-injections spread across the treatment area, and the ingredients are intended to work within the skin itself to support hydration and skin quality over time.
What Skin Booster is used for at Kaiteki
Dull, dry or dehydrated-looking skin
Hydration and overall skin quality, and fine lines associated with dryness.
Sensitised, acne-affected or post-treatment skin
Skin that needs support rather than hydration alone. The polynucleotide boosters, Rejuran and Plinest, are often considered here, once any active acne flare has settled.
Texture, pores and the under-eye area
Uneven texture and enlarged-looking pores, where a collagen-stimulating booster such as Juvelook is one option, and the under-eye area.
Which skin booster, and what is in it
Skin booster is an umbrella term, and the products under it are not interchangeable. They differ in their active ingredient.
Rejuran
Salmon polynucleotide · Pharma Research, Korea
Used to support the skin barrier and skin healing, and often considered for sensitive, acne-prone or damaged skin.
About RejuranPlinest / Newest
Trout polynucleotide · Mastelli, Italy
A polynucleotide range used to support skin regeneration and elasticity, often considered for stressed, ageing or post-treatment skin. Also fish-derived.
About PlinestProfhilo
Hyaluronic acid · IBSA, Italy
A high-concentration hyaluronic acid used for deep hydration and skin remodelling, and to support firmness.
About ProfhiloHydrodeluxe
Non-crosslinked HA · Matex Lab, Italy
A hyaluronic acid hydrogel enriched with calcium hydroxyapatite and amino acids, used to support skin moisture and overall skin quality.
About HydrodeluxeJuvelook
PDLLA + HA · VAIM, South Korea
A collagen-stimulating booster used for pores, texture and fine lines.
About Juvelook
Who should postpone or avoid it
- Pregnancy or breastfeeding. Treatment is deferred.
- Active infection, an acne flare or inflammation at the intended injection site.
- A fish or seafood allergy for Rejuran and Plinest, which are fish-derived, or a known hypersensitivity to hyaluronic acid or another ingredient.
- A bleeding disorder or blood-thinning medication.
- A tendency to keloid or hypertrophic scarring, or certain autoimmune conditions.
- Nodules or granulomatous reactions to a previous filler or biostimulator, which is a consideration for collagen-stimulating products such as Juvelook.
What a session involves
Consultation and skin assessment
A doctor examines your skin and decides whether a skin booster suits your concern and, if so, which type: hydrating, polynucleotide or collagen-stimulating.
Preparation
The skin is cleansed and a topical anaesthetic is usually applied and left to take effect, which accounts for much of the appointment time.
The injections
The doctor places the product as a series of small injections across the assessed area.
Afterwards
Soothing care and aftercare advice.
After a session
Straight afterwards
Small raised bumps at each injection point are expected. Redness, mild swelling and pinpoint bruising can also occur.The first day or two
The bumps settle as the product disperses: within hours to about a day for hyaluronic acid boosters such as Profhilo, and over roughly one to two days for polynucleotides such as Rejuran and Plinest.The following few days
Some tenderness and any bruising fade. After a collagen-stimulating booster such as Juvelook, redness and bumps can take a few days to settle.
Gentle skincare and sun protection, and a short break from heat, strenuous exercise and pressure on the treated area before resuming actives and makeup.
Risks, side effects, and what Skin Booster cannot do
Common and temporary
Bumps at the injection points, swelling, redness, bruising, tenderness and small palpable lumps, which typically settle over a short period.Less common
Infection, prolonged swelling, nodules and hypersensitivity reactions. Persistent nodules or granuloma formation are a recognised consideration with collagen-stimulating products. Vascular complications are rare but recognised with any facial injection.What it cannot do
- It does not add volume or change the shape of the face.
- It does not work in a single session. Skin boosters are used as a course, and any change develops gradually.
- It is not permanent. Courses are commonly followed by periodic maintenance.
Tell your doctor about anything in the list under who should postpone or avoid it, and about every previous filler or biostimulator.
What affects the number of sessions, and the cost
Kaiteki does not quote prices online, because the product and the amount of it are decided after examining your skin. What moves it:
- Which product your doctor selects, and for Juvelook which concentration.
- The number and size of areas: a full face, the under-eye area, the neck, hands or décolletage all differ.
- The quantity of product your doctor judges appropriate.
- How many sessions the course needs, and whether maintenance visits form part of the plan.
Skin Booster vs other options
| Treatment | Best for | Downtime |
|---|---|---|
| Skin booster | Skin quality, hydration and fine lines linked to dryness | 1-2 days |
| Dermal fillers | Lines and hollows caused by lost volume or structure | 1-3 days |
| HIFU / Ultherapy | Laxity and firmness rather than skin quality | None for most people |
Devices used at Kaiteki
Which platform is used depends on your individual assessment.
Common questions
Are skin boosters suitable for sensitive or acne-prone skin?
They may be, once any active acne flare has settled.
Is there any downtime?
Small bumps at each injection point are expected and settle within hours to about a day for hyaluronic acid boosters, and over one to two days for polynucleotides.
How many sessions will I need?
Usually a short course spaced some weeks apart, then periodic maintenance.
What is the difference between Rejuran and Profhilo?
They are built on different ingredients: Rejuran is a salmon-derived polynucleotide, Profhilo a high-concentration hyaluronic acid.
Can I have a skin booster if I am allergic to fish?
Tell your doctor first. Rejuran and Plinest are fish-derived polynucleotides. The hyaluronic acid boosters, such as Profhilo and Hydrodeluxe, are built on a different ingredient.
Read next
Where to go next
Back to all treatmentsBook a free consultation
The consultation is free, takes about 20 to 30 minutes, and there is no obligation to book treatment afterwards. A doctor will examine your skin and tell you whether Skin Booster is appropriate, and if it isn’t, what would be.
Ask about this treatmentMedically reviewed by

Dr Chew Yuhhui
Co-Founder & Senior Medical Director
MBBS, LCP Board Certified, MAC, MSAM · MMC 68232
Allow your passion to become your purpose and it will one day become your profession.
View full profile- Reviewed by
- Dr Chew Yuhhui, MMC 68232
- Last reviewed
- 8 Jun 2026
- Next review due
- 8 Jun 2027
















