Biostimulating fillers

Biostimulating fillers are injectable treatments that may provide structural support while encouraging collagen production. They are mainly considered for reduced skin firmness, gradual volume loss or less defined facial contours.

Unlike hyaluronic acid fillers, which are often used for immediate volume or shaping, biostimulating fillers are intended to produce a more gradual change in skin structure and firmness. One option is not automatically better than the other. They are used for different treatment goals.

This page explains the main types of biostimulating filler, how they work, their possible disadvantages and what to consider when comparing clinics.

Biostimulating fillers may support collagen production, skin firmness and subtle volume. Results usually develop gradually, and many products cannot be dissolved in the same way as hyaluronic acid fillers.

Read more about what dermal fillers are.

What are biostimulating fillers?

Biostimulating fillers are injectable treatments used to support firmness, structure or subtle volume. They may also be described as collagen-stimulating fillers or collagen stimulators.

Traditional hyaluronic acid fillers are commonly used to add immediate volume, improve contours or fill specific areas. Biostimulating fillers generally work more gradually. The skin or underlying tissue may appear firmer or fuller over time, depending on the product, treatment technique and individual response.

They are not suitable for every person or every treatment area. The decision should take account of your skin quality, anatomy, medical history, expectations and the practitioner’s assessment.

Why are they called collagen stimulators?

Collagen is a protein that contributes to the structure and firmness of the skin. Its quality and quantity can gradually change with age.

Biostimulating products are used to encourage a collagen response within the treated tissue. This does not guarantee a particular result. Individual responses vary and should be discussed during a consultation.

Read more about dermal fillers.

How do biostimulating fillers work?

Treatment should begin with a consultation and assessment. The practitioner will consider your skin quality, facial structure, volume loss, treatment area, medical history and intended outcome.

A typical treatment journey may include:

• Assessment of the face or treatment area

• Discussion of expectations, alternatives and risks

• Selection of the product and treatment plan

• Injection at carefully selected points

• Personalised aftercare instructions

• A follow-up appointment where appropriate

Some products provide a degree of immediate structure or support. The collagen-stimulating effect normally develops more gradually.

This means the result may look different from treatment with a hyaluronic acid filler, where changes are often visible shortly after injection.

Read more about how dermal fillers work.

Biostimulating fillers or hyaluronic acid fillers?

Both treatments are administered by injection, but they do not always have the same purpose. The appropriate option depends on the treatment goal, area and individual assessment.

Biostimulating fillers

Biostimulating fillers are mainly considered for:

• Supporting collagen production

• Improving the appearance of firmness and structure

• Providing gradual, subtle volume support

• Treating selected facial or body areas

• People who are comfortable with a result that develops over time

Many biostimulating products cannot be dissolved using hyaluronidase.

Hyaluronic acid fillers

Hyaluronic acid fillers are mainly considered for:

• Adding more immediate volume

• Defining facial contours

• Treating areas such as the lips, cheeks and facial folds

• Making targeted adjustments to shape or proportion

Many hyaluronic acid fillers can be broken down with hyaluronidase when medically appropriate.

Neither category is universally better. A consultation should establish which treatment, if any, is suitable.

Read the comparison between hyaluronic acid and biostimulating fillers.

When might a biostimulating filler be considered?

A person researching biostimulating fillers may find that another treatment is more appropriate. The choice should be based on the intended result rather than the popularity of a particular product.

Possible treatment directions include:

• For more immediate volume, a hyaluronic acid filler may be considered.

• For gradual support of firmness and structure, a biostimulating product may be discussed.

• For hydration or skin quality, a skin booster or injectable skin-remodelling treatment may be more appropriate.

• For lines caused mainly by muscle movement, a muscle-relaxing injectable treatment works differently from fillers.

• For subtle contour support, either a hyaluronic acid or biostimulating filler may be considered, depending on the area and anatomy.

A responsible practitioner should explain why a treatment is being recommended and discuss suitable alternatives, including no treatment.

Read more about hyaluronic acid fillers.

Types of biostimulating filler

Biostimulating fillers may contain different active materials. Two commonly discussed categories are calcium hydroxylapatite and poly-L-lactic acid.

Calcium hydroxylapatite

Calcium hydroxylapatite is usually abbreviated to CaHA. Radiesse is a commonly recognised example.

CaHA products may be discussed for:

• Structural support

• Selected contour treatments

• Subtle volume support

• Collagen stimulation

The way a CaHA product is used can vary according to the treatment area, dilution and intended result.

Poly-L-lactic acid

Poly-L-lactic acid is usually abbreviated to PLLA. Examples include Sculptra and Lanluma.

PLLA treatments are commonly discussed for:

• Gradual collagen stimulation

• Subtle volume improvement

• Broader areas of volume loss

• Treatment plans involving more than one session

A brand name alone does not show whether a product is suitable for you. Ask what product will be used, why it has been selected and what risks, alternatives and aftercare apply.

Read more about Lanluma treatment.

Which areas can be treated?

Biostimulating fillers are generally discussed for areas where improved structure, firmness or subtle volume support is wanted.

Possible treatment areas include:

• Cheeks

• Jawline

• Chin

• Temples

• Lower face

• Neck

• Décolletage

• Hands

Not every product is appropriate for every area. The treatment choice also depends on whether the main concern is volume, hydration, skin quality, contour or muscle-related lines.

Some delicate or highly mobile areas may require a different product or treatment approach.

Read more about adding volume to the cheeks.

When will results become visible?

Results from biostimulating fillers may develop gradually. Some products provide an immediate degree of support, but collagen-related changes usually take longer to appear.

The timing can depend on:

• The product used

• The amount of product

• The treatment area

• Your skin quality

• Individual metabolism

• The number of sessions

• Injection technique

• The overall treatment plan

The response is not identical for every person. The practitioner should explain what may be realistic before treatment.

How long can the result last?

The duration varies according to the product, treatment area, amount used and individual response. Lifestyle, skin quality and maintenance treatment may also affect how long the result remains noticeable.

Some treatment plans involve several sessions followed by occasional maintenance. Results cannot be guaranteed.

Read more about how long dermal fillers can last.

How much do biostimulating fillers cost?

The cost of treatment depends on the product, amount required, treatment area and number of sessions.

Other cost factors may include:

• The practitioner’s qualifications and experience

• The complexity of the treatment plan

• The clinic’s location

• Whether consultation and follow-up appointments are included

• Whether more than one session is recommended

• The amount of product required for the intended area

Do not compare clinics using price alone. The medical assessment, practitioner, product choice, treatment technique and aftercare are also important.

Read more about dermal filler costs.

Disadvantages and risks

Biostimulating fillers are not the best option for every person. One disadvantage is that results usually develop gradually. Several treatment sessions may be recommended before the intended change becomes noticeable.

Many biostimulating products also cannot be dissolved in the same way as hyaluronic acid fillers. Careful product selection and treatment technique are therefore particularly important.

Possible side effects and complications include:

• Redness

• Swelling

• Bruising

• Tenderness

• Temporary asymmetry

• Lumps or nodules

• Firmness within the treated area

• Unevenness

• Inflammatory reactions

• Granulomas

• Overcorrection

• Rare vascular complications

Contact the clinic promptly if you experience unusual or increasing pain, skin discolouration, worsening swelling, fever or symptoms that do not feel consistent with the aftercare information provided.

Before treatment, ask how the clinic manages lumps, persistent firmness, complications or an unsatisfactory result.

Read more about dermal filler side effects.

When might treatment be unsuitable?

A biostimulating filler may be unsuitable or require further assessment when:

• You mainly want immediate lip volume

• You specifically want a filler that can be dissolved

• There is an active skin infection or inflammation

• You are pregnant or breastfeeding

• You expect an immediate final result

• Your medical history requires additional assessment

• You are uncertain about the product or treatment plan

• Appropriate aftercare or follow-up is not available

A responsible practitioner should also explain whether a hyaluronic acid filler, skin booster, injectable skin-remodelling treatment or no treatment would be more appropriate.

This page is intended for adults. Clinics should follow the relevant age restrictions and safeguarding requirements for cosmetic injectable treatments.

Read more about fillers during pregnancy and breastfeeding.

Aftercare following biostimulating fillers

The exact aftercare instructions depend on the product, treatment area and clinic. Follow the personalised advice provided by your practitioner.

General guidance may include:

• Avoid touching the treated area unnecessarily.

• Massage the area only when specifically advised.

• Avoid applying make-up immediately if instructed to do so.

• Avoid strenuous exercise for the period advised by the clinic.

• Avoid saunas, excessive heat and intensive facial treatments while the area settles.

• Attend a follow-up appointment when recommended.

• Contact the clinic if symptoms appear unusual or worsen.

Massage may be part of the aftercare for certain products, but it is not appropriate in every situation. Follow the instructions for the specific product used.

Can biostimulating fillers be dissolved?

Many hyaluronic acid fillers can be broken down with hyaluronidase when clinically appropriate. Biostimulating fillers generally behave differently and often cannot be dissolved in this way.

This makes the initial consultation, product selection, injection technique and treatment plan especially important.

Ask the practitioner what options would be available if you were unhappy with the result or experienced a complication.

Read more about dissolving dermal fillers.

How to choose a clinic

Biostimulating products can work differently depending on the product, treatment area and individual response. Compare clinics on more than price.

Questions to ask include:

• What experience does the practitioner have with biostimulating fillers?

• Is the practitioner appropriately qualified?

• Is their relevant professional registration clear?

• Which product will be used?

• Why is that product suitable for the intended area?

• What will the treatment plan involve?

• Are several sessions likely to be needed?

• What side effects and complications are relevant?

• What aftercare and follow-up are included?

• How does the clinic manage lumps, nodules or persistent firmness?

• What happens if the result does not meet expectations?

• Will suitable alternatives be discussed?

A good consultation should include a realistic explanation of the potential outcome and the limitations of treatment.

Read more about choosing a dermal filler clinic.

Compare biostimulating filler clinics

A consultation can help establish whether a biostimulating filler is appropriate for your skin, facial structure and intended result.

Compare clinics, practitioner qualifications, treatment approaches and patient reviews. During the consultation, ask which product is recommended, why it is suitable and what alternatives, risks and aftercare should be considered.

Use Injectablesbooking.co.uk to compare clinics that provide clear information about what treatment may and may not realistically achieve.

Frequently asked questions about biostimulating fillers