Sosum Hard is the high-density option in its range: a cross-linked hyaluronic acid gel made with large particles and intended for deep folds and structural contouring of the face. It comes ready to use in a pre-filled syringe.
The gel is based on cross-linked hyaluronan, a sugar-chain molecule found naturally in skin. The maker produces it using what it calls Low-Temperature Stabilisation Reaction (LTSR) technology, a process intended to keep the cross-linked network stable and to slow its breakdown in tissue. Particle size is large, which is why the product is positioned for deeper correction rather than fine surface lines. The maker also describes the formulation as hypoallergenic.
The areas named for this gel fall into four groups:
Which of these suits a dense, large-particle gel is a judgement the treating practitioner makes for each area, taking into account how deep the tissue is. Our guide to filler selection looks at how density and particle size influence that choice.
Each pack contains a pre-filled syringe. Syringe volume, hyaluronic acid concentration, whether lidocaine is included and which needles are supplied are not stated in the information we hold.
What does "LTSR" mean? Low-Temperature Stabilisation Reaction, the maker's process for stabilising the cross-linked gel.
How long is it said to last? The maker quotes a duration of 8–12 months, which it says varies with injection technique and the aftercare followed.
Is it a fine-line product? No. Its large particles position it for deep folds and contouring.
Supplied for clinical use. Lushfills supplies this product to licensed professionals; it should only be administered by a suitably qualified practitioner.
We typically process and ship orders within 1 week, with shipping costs calculated at checkout based on your location and selected method. Free shipping is applied automatically to orders of €999 or more. Once your order ships, you will receive a confirmation email with a tracking number to monitor your package’s status. Delivery usually takes 5-10 business days. If you need to change your shipping address after placing an order, please contact us as soon as possible. In case of lost or stolen packages, we recommend reaching out to the carrier first, but our support team is happy to assist. For returns, we accept items within 1 week, provided they are unused and in their original packaging. Refunds are processed within 5-10 business days after we receive and inspect the returned item. Exchanges are also available if you need a different variant of a product. If you have any questions about shipping or returns, feel free to contact our support team.
Our products are exclusively for use by qualified professionals, and are not intended for personal use or self-treatment. The content on this website is for informational purposes only and should not be considered as advice or a substitute for professional consultation. Please consult with a qualified healthcare provider for treatment recommendations and safety information.
Lushfills
Restricted access · Professionals only
Lushfills supplies professional aesthetic products exclusively to licensed healthcare and aesthetic professionals and to registered clinics and businesses. These products must be handled, administered and used only by appropriately trained and qualified professionals.
By selecting “I confirm I am a licensed professional” you declare that you hold a valid professional licence and accept our Terms of Service and Privacy Policy. Lushfills accepts no liability for misuse, improper administration or unauthorised use of its products. False declarations will result in order cancellation.
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