Injectables / LANGEVIAX
“Collagen stimulator” is not one treatment. CaHA and PLLA are different materials; selection must account for volume goals, gradual tissue change and the options if the result is unwanted.
Sources checked: 17 October 2026 · Independent clinical review of all pages is not complete.
CaHA and PLLA behave differently
CaHA contains calcium hydroxylapatite particles in a gel carrier, so some correction may be visible early while a tissue response develops later. PLLA contains biodegradable polymer particles and its effect is more gradual. Immediate post-injection swelling is not new collagen or the final volume. The precise formulation and intended use matter, even when products share a material name.
Section sources: FDA — FDA-Approved Dermal Fillers: materials
Tissue changes are not a universal outcome
Histology can demonstrate tissue or collagen-marker changes without establishing how much visible improvement you will notice, individual durability or universal superiority. One randomized PLLA histology study enrolled only ten women. Your decision should use goal-relevant outcomes, standardized photographs and adequate follow-up. A promise of “complete regeneration” does not identify a measurable clinical outcome.
Section sources: Randomized study · Histological effects of PLLA (2024; 10 participants)
Compare HA and surgical options
HA may be considered when earlier contour change and material-reduction options are priorities. Hyaluronidase does not dissolve CaHA or PLLA as it does HA. Longer persistence can become a disadvantage if you dislike the result. If substantial excess skin is the concern, adding volume may not meet the goal; discuss surgical assessment or choosing no procedure as well.
Section sources: FDA — Dermal Fillers (Soft Tissue Fillers) · FDA — FDA-Approved Dermal Fillers: materials
Suitability and staged planning
Disclose previous nodules, allergies, raised scars, earlier fillers, active skin disease and medicines. Lips and the eye region should not be treated as interchangeable with other sites; indications are product-specific. Ask for the product’s Canadian licence and why it fits your concern. Before purchasing a course, establish when another session would be justified and the total follow-up cost.
Section sources: American Academy of Dermatology — Fillers: Preparation · Health Canada · Medical device licences
Massage instructions are material-specific
Swelling and bruising can distort early assessment; arrange review according to the material and goal. Some PLLA preparations have specific massage instructions, but these cannot be transferred to every injectable. Obtain written instructions for your own treatment. Do not try to correct a painful or new lump with force, home tools or vigorous massage.
Section sources: American Academy of Dermatology — Fillers: FAQs
What supportive products can do
A topical product cannot reposition injected particles. For intact, dry skin, ask about gentle cleansing and a fragrance-free moisturizer; open sites require specific instructions. Match sun protection to skin condition. If a reaction develops, record its onset and photograph it for the clinic. Do not independently start a steroid or antibiotic cream to conceal a developing problem.
Section sources: American Academy of Dermatology — Dermatologists' top tips for relieving dry skin · AAD · When topical antibiotics are and are not needed
Urgent symptoms and delayed nodules
Unusual pain, white, grey or blue skin and visual change after injection require immediate care; call 911 for visual loss, stroke symptoms or breathing difficulty. Later nodules, drainage and persistent inflammation also need clinical assessment. Not being dissolvable with hyaluronidase does not mean a complication needs no treatment or is untreatable; management depends on its cause.
Section sources: FDA — Dermal Fillers (Soft Tissue Fillers)
My consultation question sheet
Choose the questions to take with you. These selections are not sent to a clinic or saved to an account.
Printed sheet: the final procedure and product choice require consultation.
Frequently asked questions
Are these permanent fillers?
CaHA and PLLA are biodegradable, but their tissue effects and persistence differ from HA. Permanent, long-lasting and dissolvable are different concepts.
Section sources: FDA — FDA-Approved Dermal Fillers: materials
Does collagen stimulation replace a facelift?
Gradual tissue or volume change does not remove excess skin. The degree of laxity and your goal determine which options are worth assessing.
Section sources: FDA — FDA-Approved Dermal Fillers: materials · AAD · Planning filler treatment and follow-up
What if I dislike the result?
Arrange a review at the appropriate time; material, site and the reason for dissatisfaction matter. Waiting without assessment is inappropriate when warning signs occur.
Section sources: FDA — Dermal Fillers (Soft Tissue Fillers)
Related guides to explore
Sources and context
Canadian sources take priority for regulatory context. FDA or other foreign information does not establish Canadian authorization for a product or use. A source-check date is distinct from publication date or independent clinical approval.
- FDA — FDA-Approved Dermal Fillers: materialsUS regulator: material characteristics; not Canadian authorization · 2026-10-17
- Randomized study · Histological effects of PLLA (2024; 10 participants)trial · 2026-10-17
- FDA — Dermal Fillers (Soft Tissue Fillers)US regulator: safety and limitations; not Canadian authorization · 2026-10-17
- American Academy of Dermatology — Fillers: PreparationProfessional society: consultation guidance · 2026-10-17
- Health Canada · Medical device licencesregulator · 2026-10-17
- American Academy of Dermatology — Fillers: FAQsProfessional society: recovery and expectations · 2026-10-17
- American Academy of Dermatology — Dermatologists' top tips for relieving dry skinUS specialist society guidance; general barrier-care principles, not a laser-product trial · 2026-10-17
- AAD · When topical antibiotics are and are not neededsociety · 2026-10-17
- AAD · Planning filler treatment and follow-upsociety · 2026-10-17
A next step that fits your question
Use Care to review related topics and prepare for a conversation. The product-label service can help organize ingredient information. The tools do not establish procedure candidacy or diagnose a complication.