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Calcium Hydroxylapatite (CaHA)

From structural lift to skin rejuvenation — a versatile injectable that restores volume and stimulates natural collagen production

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introduction

What is injectable Calcium Hydroxylapatite?

Radiesse calcium hydroxyapatite (CaHA) injectable syringe used for facial contouring and collagen stimulation

Injectable calcium hydroxyapatite (CaHA) is a collagen-stimulating dermal treatment used to restore facial structure while improving overall skin quality.

Unlike traditional dermal fillers that focus primarily on volume, CaHA works through a dual-action mechanism. In its standard form, it provides immediate structural support, helping to lift sagging areas, enhance facial contours, and improve definition in areas such as the cheeks and jawline.

At the same time, CaHA stimulates the body’s natural collagen production. As the initial carrier gel is gradually absorbed, newly formed collagen helps improve skin firmness, elasticity, and density over time.

When used in a hyperdiluted form, the treatment shifts towards a more regenerative approach, focusing less on volume and more on improving skin texture, laxity, and overall skin quality.

benefits

What Are the Benefits of Calcium Hydroxyapatite?

Calcium hydroxyapatite filler providing structural support and lifting effect in skin layers

Immediate Structural Lift & Definition

Calcium hydroxyapatite (CaHA) provides immediate structural support upon injection, helping restore definition in areas such as the jawline, cheeks, and lower face. It enhances contour and improves mild sagging without relying on excessive volume, making results appear more natural and balanced.

Compared to softer fillers, CaHA allows for more precise facial contouring and lifting, particularly in the lower face where structure and definition are key.

This makes it effective for:
  • Improving jawline definition and early jowls
  • Enhancing cheek structure and mid-face support
  • Restoring facial balance without an overfilled look
Calcium hydroxyapatite microspheres stimulating fibroblasts and collagen production in the dermis

Stimulates Natural Collagen Production

In addition to its immediate lifting effect, CaHA acts as a collagen-stimulating injectable that supports the skin’s natural regenerative processes. The microspheres provide a scaffold that encourages fibroblasts to gradually produce new collagen within the treated areas.

As the carrier gel is slowly absorbed, this collagen helps maintain structure and firmness, leading to progressive improvement over several months.

This supports:
  • Gradual firming and strengthening of the skin
  • Longer-lasting results beyond initial volume
  • Natural results as collagen develops over time
Improved skin density and collagen network after Radiesse treatment

Improves Skin Quality, Density & Firmness

CaHA not only restores structure but also improves overall skin quality, particularly when used in a more diluted form. It enhances skin thickness, elasticity, and dermal density, helping the skin appear smoother and more resilient over time.

This makes it suitable for areas where skin has become thinner or less elastic, supporting a more regenerative approach to skin rejuvenation.

This is beneficial for:
  • Improving skin texture and elasticity
  • Thinning skin in the lower face, neck, and décolletage
  • Strengthening the skin’s underlying support structure

What It Treats

What Does Calcium Hydroxyapatite Treat?

Calcium hydroxyapatite filler providing immediate structural support and lifting effect in skin layers
Facial Contouring & Structural Volume Loss (Standard CaHA)

Calcium hydroxyapatite (CaHA) in its standard form is commonly used for facial contouring and structural support, helping to restore definition in areas affected by volume loss and early sagging. It is particularly effective in the lower face, where maintaining structure is key to a balanced and natural appearance.

By providing immediate lift and support, CaHA helps improve facial proportions while avoiding an overfilled look, making it suitable for patients seeking subtle, natural-looking contouring.

Common concerns treated include:
  • Loss of jawline definition and early jowls
  • Flattening of the cheeks and mid-face volume loss
  • Nasolabial folds (smile lines)
  • Marionette lines and lower face heaviness
  • Mild to moderate facial sagging
Radiesse stimulating fibroblasts and collagen production in the dermis
Skin Rejuvenation & Collagen Stimulation (Hyperdiluted CaHA)

When used in a hyperdiluted form, calcium hydroxyapatite shifts towards a more regenerative, skin-focused treatment, targeting overall skin quality rather than volume. This approach is used to improve skin laxity, thinning skin, and loss of elasticity in both facial and body areas.

Instead of creating lift through structure, hyperdiluted CaHA works by stimulating collagen production across a wider area, helping the skin become firmer, thicker, and more resilient over time.

Common concerns treated include:
  • Skin laxity in the lower face and jawline
  • Neck lines and crepey skin
  • Thinning skin with reduced elasticity
  • Décolletage ageing and skin texture changes
  • Mild acne scarring and uneven skin texture

FAQ

Frequently Asked Questions about Calcium hydroxyapatite

How does Calcium Hydroxylapatite (CaHA) work?

Calcium Hydroxylapatite (CaHA) is composed of microspheres suspended in a biocompatible gel. When injected, it works in two complementary ways:

  1. Immediate structural support: The gel and microspheres restore lost volume, lift sagging areas, and enhance facial contours, providing a refreshed, natural appearance right after treatment.

  2. Collagen stimulation: The microspheres encourage your body’s own fibroblasts to produce new collagen gradually. Over time, this strengthens the skin’s internal support, improving firmness, elasticity, and texture.

When hyperdiluted, CaHA focuses solely on collagen stimulation without adding volume, making it ideal for improving skin quality in areas like the neck, hands, décolletage, or regions affected by stretch marks. This dual action provides immediate lift and long-term skin rejuvenation.

Yes. Calcium Hydroxylapatite (CaHA) is an approved injectable treatment in Singapore when administered by trained doctors. It has a well-established safety profile and is widely used in aesthetic medicine worldwide to lift, contour, and stimulate collagen.

CaHA is naturally found in the human body, primarily in bones and teeth, making it highly compatible with tissue and reducing the risk of allergic reactions.

The microspheres in CaHA are gradually metabolised by the body, while the gel carrier is absorbed naturally. Long-term complications are uncommon when treatments are performed correctly by qualified practitioners, ensuring safe and reliable results for both facial contouring and skin rejuvenation.

The number of sessions depends on the form of CaHA used and your individual aesthetic goals:

  • Regular CaHA (dermal filler): For facial contouring and volume restoration, most clients achieve the desired results with a single session. The treatment immediately lifts and sculpts facial features, while the gradual collagen stimulation continues to enhance skin quality over the following weeks.

  • Hyperdiluted CaHA (collagen stimulator): When the goal is skin rejuvenation, collagen stimulation, or improvement of skin texture and elasticity, multiple sessions may be recommended. Typically, our doctors recommend 2–3 sessions spaced 4 to 6 weeks apart allow for gradual collagen regeneration and progressive improvement in skin quality.

The timeline for results depends on the form of CaHA used and treatment goals:

  • Regular CaHA (dermal filler): Volume restoration and lifting effects are immediately visible, especially in areas like the cheeks, jawline, and chin. Collagen stimulation continues over the following weeks, gradually enhancing firmness, elasticity, and skin texture. This progressive improvement ensures that results look natural and evolving rather than abrupt.

  • Hyperdiluted CaHA (collagen stimulator): When used to stimulate collagen without adding volume, visible changes appear gradually over several weeks. Skin texture, elasticity, and firmness improve over time, making hyperdiluted CaHA ideal for overall skin rejuvenation in areas such as the neck, hands, décolletage, or stretch marks.

The longevity of results varies according to the form of CaHA, treatment area, and individual factors such as skin type and lifestyle:

  • Regular CaHA (dermal filler): The volumising lift is immediately noticeable, with effects typically lasting 12–18 months. Collagen stimulation continues over time, maintaining skin quality and contributing to a natural, refreshed appearance even as some volume gradually diminishes.

  • Hyperdiluted CaHA (collagen stimulator): Visible improvements in skin texture, firmness, and elasticity develop gradually over several weeks as collagen regenerates. The effects of hyperdiluted CaHA are long-lasting, generally up to 12 months, though maintenance sessions may be recommended your doctor to support ongoing collagen production and optimal skin rejuvenation.

Restylane® Kysse Lip Fillers
What is Restylane® Kysse

Dubbed as the gold standard of lip fillers, Restylane® Kysse is a hyaluronic acid (HA) filler that’s designed specifically for our lips. Using XpresHAn™ Technology, it provides flexible movement and natural-looking volume while enhancing the texture and colour of the lips.

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Benefits of Restylane Kesse

  • Luscious, plumped lips

  • Soft, natural-looking results

  • Smooths lip lines and wrinkles

  • Enhances the colour of your lips

  • Allows for flexible lip movements

  • More defined, volumized, and youthful lips

  • Longer-lasting results as compared to other lip fillers

  • Immediate results with zero downtime

What to Expect

Step 1

All Restylane® Kysse fillers come with lidocaine, an anesthetic, to ensure that your treatment is relaxing and entirely comfortable. Initially, a topical anesthetic will be applied on the injection site to numb the area.

Step 2

Our aesthetic doctor will begin the procedure with the first injection using an ultra-fine needle, before taking a pause to allow the lidocaine in Restylane® Kysse to further numb the lip area.

Step 3

The procedure then continues until the treated area shows the desired results. Thereafter, the injected area will be massaged to ensure that the filler gel is distributed evenly across the lips for natural results.

Are there any before and after photos of Restylane® Kysse results?

As dictated by Ministry of Health, we are not allowed to publish ‘before’ and ‘after’ images of aesthetic treatments. If you are interested in seeing the full before-and-after results please provide us with your name and email below, and we will send the images to your email address.

Restylane Kysse Frequently Asked Questions
Am I an ideal candidate for Restylane® Kysse Lip Fillers?

Patients should not use Kysse lip filler if they:

  • Have a history of severe allergic reactions.

  • Have had a previous allergic reaction to hyaluronic acid fillers.

  • Are allergic to anesthetics, like lidocaine.

While both of these are hyaluronic acid lip fillers, they have slightly different formulas. Restylane® Kysse adds volume and enhances your existing lip shape and symmetry to create smooth, natural-looking lips. It can also treat smoker’s lines, or commonly known as wrinkles around the mouth.

Juvederm, on the other hand, is a great option for patients who are looking for a more voluminous look. When deciding on which lip filler, it depends on the look you want to achieve.

Due to the different formulations, Restylane® Kysse has a unique structure that lasts longer than other fillers. Most dermal lip fillers last around 9 months, however you can expect results lasting up to 12 months with Restylane® Kysse.

The discomfort experienced during the treatment varies from person to person and depends on factors such as:

  • Sensitivity of the patient

  • Pain tolerance of the patient

  • Anxiety level of the patient

Restylane® Kysse comes with anesthetic inside the gel already, hence discomfort is at its minimum.

All lip fillers have some mild side effects. You may experience some slight swelling and bruising on the injected area, but these should go away within 7 days.

  • As with other lip fillers treatment, a cold compress may be applied to the injected area to reduce swelling.

  • Avoid touching the injected area for at least 6 hours so that you do not accidentally injure your skin while the area is numb. Thereafter, the treatment area can be gently washed with soap and water.

  • Minimise strenuous exercise and exposure to excess heat, sun, or UV rays for the first 24 hours. Exposure to these may cause temporary redness, swelling, or itching at the treated area.

Full aftercare instructions will also be provided after the treatment.

Got more questions? Contact our clinic for more information or schedule an appointment with our doctor

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Acne

A commonly overlooked yet physically and psychologically scarring problem, acne is a long-drawn problem that commences at puberty and can drag on well into one’s 20s to 30s. Adult-onset acne is also common, commencing in one’s 20s to 30s and dragging on well beyond that. Caused mainly by accumulation of dead skin, bacterial infection and uncontrolled inflammation, acne is a rather well understood medical condition. Hormonal influences, genetic factors, and even proposed dietary influences are known to be the underlying drivers of acne in some too. Early intervention is the best solution – less acne translates to less scarring, saving you precious time and finances required in attempting to resurface those pesky scars later on.

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Acne Treatments

Chemical Peels

Chemical peels consist of mild acids that, when applied to skin, promote controlled exfoliation of skin as well as inactivation of the sebaceous units responsible for breakouts.

Used as a complimentary form of treatment to existing topical therapy, chemical peels can quickly and effectively control most forms of acne.

3-5 sessions are typically required at 2 weekly intervals to bring acne under control, with subsequent sessions done every 4-6 weeks for maintenance.

Find out more about Chemical Peels

Carbon Peel

Using a specialised laser and a black carbon-based ink on the face, sebaceous glands can be targeted, bacteria killed, and mild exfoliation performed.

Sessions done at 2-4 weekly intervals can help keep acne bay while also helping to lighten any post-inflammatory pigmentation left by the acne and even reduce pore size.

 Find out more about Chemical Peels

AGNES

For the larger, stubborn and recurrent acne, the use of a highly selective probe to deliver high radio-frequency energy into the sebaceous unit effectively and permanently inactivates the gland.

This more permanent solution to acne allows for effective management of recurrent acne without having to resort to oral medication such as oral isotretinoin.

Read more about AGNES acne treatment

Medical Facials for Acne Treatment

Gentle Medical Facial 

Perfect for unclogging pores and reducing P. acne presence in the skin, our gentle medical facial includes a session of microdermabrasion, a light chemical peel and a session with the Omnilux blue LED light  – a perfect combination for comedonal acne. 

Read more about Omnilux blue LED light

Sciton Blue BBL

Harnessing the power of intense blue light, the Sciton Blue BBL therapy eliminates one of the contributing factors of acne – the bacteria, P. Acne.

Stronger than LED light, BBL effectively reduces acne while calming the state of the skin as a whole. 

Read more about Sciton Blue BBL

Optimised Acne Treatment Programmes

Acne elimination programme

Combining the benefits of lasers and acids, this customised programmes aims at eliminating existing acne, preventing further acne formation and erasing the post-inflammatory hyperpigmentation formed by acne.  Skin is also renewed, texture improved and a fresh glow attained. With minimal downtime and side effects, this combination therapy is built to reign in those outbreaks.

Treatments for Freckles and Pigmentation

At The Aesthetic Studio Clinic & Surgery, we offer a variety of options for treating pigmentary problems, eliminating brown spots and uneven pigmentation. These treatments also provide additional benefits of rejuvenating the skin, improving texture and appearance, softening wrinkles, tightening the skin, removing redness and broken blood vessels.

Treatment for Freckles and Pigmentation with Topical Treatments and Creams
Topical treatments are critical to help fade brown discolouration and prevent new areas from appearing. We use established and well studied ingredients in our skincare products, such as retinoids (prescription strength vitamin A) and retinol, hydroquinones (prescription bleach at varying strengths), kojic acid, licorice, various alpha, beta, and poly hydroxy acids, exfoliants, and melanocyte stabilising products. The Aesthetic Studio carries distinguished dermatologic product lines such as Obagi, SkinCeuticals, PCA Skin, La Roche Posay, and other products only available to clinics.

Treatment for Freckles and Pigmentation with Chemical peels
We provide superficial, medium depth and deeper peels – tailored to our patients needs, pigmentation type and recovery time requirements. Even gentle light peels help fade freckles, sun spots, age spots, and other excess pigmentation to reveal clearer, younger-looking skin.

Treatment for Freckles and Pigmentation with Cosmelan® Depigmentation masque
Cosmelan® Depigmentation masque is a painless, single session, clinic applied treatment that particularly suitable for stubborn and dense pigmentation. Cosmelan®’s synergistic ingredients effect quick, effective blending and elimination of undesirable pigment. Cosmelan® is “sun-friendly”, and works well even on darker toned Asian and Latin skin. Cosmelan® will also produce a slight initial “peel” which helps refinish the skin surface while dramatically diminishing hyperpigmentation. This is followed by a specialised home skin care program to enhance, maintain and protect the new skin.

Treatment for Freckles and Pigmentation with Spectra Laser Toning
Spectra Laser Toning is an advanced treatment protocol that provides a gentle, safe, and effective treatment for stubborn blotchy hormonal pigmentation known as melasma. Spectra treatments also help with generalised pigmentation issues, redness, pore size, unwanted hair, acne, rosacea, and gently tightens and refreshes the skin. It is a favourite as there is no downtime or healing time.

Treatment for Freckles and Pigmentation with Intense Pulsed Light (IPL) – Sciton BBL
BBL/IPL treatments are the treatment of choice for reversing the signs of sun-damaged skin. It will gently reduce excess pigmentation on sun exposed areas of the body including the face, neck, chest, hands, and arms. In addition to treating brown spots, this light source treats redness, broken blood vessels, shrinks pore size, tightens skin, and can help with acne and rosacea. Maximum benefits are achieved with a series of 2 to 3 treatments.

Treatment for Freckles and Pigmentation with Fractional CO2 Laser Skin Resurfacing
Fractional Carbon Dioxide (CO2) laser skin resurfacing treatments even out skin colouring by removing the dull, damaged, outer layer of skin; while minimising downtime. In addition to treating pigmentation, these laser treatments will also improve skin texture, redness, pore size, and wrinkles, repairing sun damaged or acne-scarred skin, and treat pre-cancerous skin lesions.

At The Aesthetic Studio Clinic & Surgery, we are dedicated to enhancing the health and appearance of your skin through innovation and clinical excellence. For a comprehensive facial assessment, call +65 6737 1100 or click here for an appointment.

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Tattoo Removal
Tattoos, while easily placed, are much more complicated to erase. Newer methods of treatment are more reliable, and total time required for tattoo removal can be shortened to less than a year.

Tattoos, while easily placed, are much more complicated to erase. Existing therapies involve the use of nano-second Q-switched lasers, but treatments prove difficult with many requiring 2-3 years of repeated visits at 2-3 monthly intervals. Newer methods of treatment involve the use of newly developed pico-second lasers. These lasers, firing many times faster than conventional Q switched lasers, fracture pigments more effectively. In effect, treatments are more reliable, and total time required for tattoo removal can be shortened to less than a year.

Here at The Aesthetic Studio, we employ the use of the Lutronic Picoplus Pico-second laser for optimal tattoo removal; with 4 wavelengths of light at your disposal, removal of tattoos of varying colour and complexity just got easier.

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Tattoo Removal Treatment
Tattoo Removal

With a high energy output, a wide range of precisely controllable fluence output and four wavelengths of light for increased versatility, the Picoplus Pico-second laser is optimised for tattoo removal and pigment management. 

Depending on tattoo complexity, 5-10 sessions may be required at monthly intervals for optimal clearance.

Combination with ablative lasers may be advised to reduce post-laser blistering commonly associated with tattoo removal.

Read more about Lutronic Picoplus Laser

Read more about Tattoo Removal Treatments

Frequently Asked Questions