The question of safety open filler concerns not only cosmetologists, but also patients who purchased the drug for a course of procedures. There are different situations: the doctor filled the syringe, but the procedure was interrupted, or you bought the drug with a supply for several sessions. Storage of such products requires strict adherence to temperature conditions, since hyaluronic acid and other components are sensitive to external factors.
The basic rule is: after breaking the seal of the original packaging saline solution or the gel begins to interact with the environment, which triggers the processes of oxidation and possible bacterial contamination. In the refrigerator at temperatures from +2 to +8 degrees Celsius, these processes slow down, but do not stop completely. It is important to understand that the standard expiration dates indicated on the packaging apply only to sealed the product.
In this article we will look in detail at how to properly organize storage, what risks exist when violating the rules and what to look for before reintroducing of the drug. Re-use of an open syringe is possible only within 24-48 hours, provided that the needle and cap are completely sterile. Any deviation from the norm can lead to serious complications.
Factors affecting the stability of the drug
The first and most critical factor is temperature regime. Gel fillers based on hyaluronic acid have a complex polymer structure that can be destroyed if improperly cooled. If the temperature in the refrigerator drops below zero, crystallization of the water contained in the gel will occur, which will irreversibly change its viscosity and temperature regime rheological properties.
The second important aspect is sterility. When the ampoule is opened or the cap is removed from the syringe, air containing microscopic dust particles and microorganisms may enter. Even if you visually do not see changes, bacterial contamination it could have already begun. That is why manufacturers often indicate that the drug is intended for single use.
The third factor is light. Direct sunlight or bright artificial lighting may cause photochemical reactions in the drug. Therefore, open packages should be stored in a dark place, for example, in an opaque container or on the refrigerator door, closed from light. The combination of these three factors determines how safe it will be re-introduction.
Recommended shelf life by type of drug
Different types of fillers have different resistance to external influences after opening. For products based on stabilized hyaluronic acid, the shelf life in the refrigerator after the first puncture of the rubber stopper or removal of the cap usually does not exceed 24 hours. This is due to the fact that the stabilizer (most often BDDE) provides the density of the gel, but does not protect it from microbes.
Preparations containing lidocaine or other anesthetics require even more careful handling. Lidocaine can crystallize if not stored correctly, forming micro-crystals that will cause pain and swelling when injected. If the composition contains vitamins or amino acids (as in biorevitalizants), their lifespan after opening is reduced to a minimum, since organic substances are an ideal environment for the growth of bacteria.
Below is a table systematizing data on the main types of drugs:
| Type of drug | Maximum shelf life | Conditions | Risks |
|---|---|---|---|
| Fillers (Gel) | 24-48 hours | +2...+8°C, sterile | Change in viscosity |
| Biorevitalizants | Not recommended | Single dose | High risk infections |
| Collagen stimulants | 24 hours | Darkness, cold | Protein denaturation |
| Calcium hydroxyapatite | Up to 12 hours | Shaking before storage | Separation of fractions |
Rules for organizing storage at home
If you are forced to store the drug at home, make sure that your refrigerator is in working order and maintains a stable temperature. The best place to place it is on the middle shelf or door, but away from the freezer. It is strictly forbidden to place syringes or vials next to products that have a strong odor, as the plastic packaging may be permeable to volatile substances, which will affect the chemical composition.
For additional protection, use an airtight container with a lid (for example, a food lunch box), pre-treated with alcohol. This will create a buffer zone and protect the drug from accidental splashes or condensation, which often forms in refrigerators. You can place a cold element (cold accumulator) inside the container, but do not allow direct contact of the drug with ice.
⚠️ Attention: Never freeze fillers! Even short-term freezing destroys the structure of hyaluronic acid, turning the smooth gel into a granular mass that cannot be restored.
Before removing the drug for use, allow it to warm to room temperature for 15-20 minutes. A sharp temperature change when cold gel is introduced into tissues can cause vasospasm and pain. In addition, the warm gel is easier to administer and distributes more evenly in the tissues.
Signs of deterioration of the drug before use
Before deciding to use a previously opened filler, it is necessary to conduct a thorough visual and tactile diagnosis. The changes may be subtle, so it is important to pay attention to the smallest details. If you notice turbidity a solution that was initially transparent, it is strictly prohibited to use it.
Be sure to check the consistency. Place a small amount of gel on a sterile wipe. It should be homogeneous, without lumps, flakes or separation into liquid and thick fractions. The appearance of an unpleasant odor - even a weak one - indicates the beginning of bacterial decomposition of the components.
What to do if the gel has separated?
If you see that the liquid has separated from the gel, try to carefully mix the contents with a sterile needle. If uniformity is not restored after 5-10 minutes, the preparation is spoiled.
Also pay attention to the color. Some fillers may initially have a slight yellowish tint, but if the color becomes more intense or foreign inclusions appear, this is a sign of oxidation. The use of such a drug can lead to the appearance of granulomas or inflammatory reactions.
Technical aspects: syringes and needles
The condition of consumables deserves special attention. If the filler is stored in a syringe, make sure the plunger is not jammed. If stored in one position for a long time, the silicone grease on the piston may thicken, making insertion difficult. Before storage, it is recommended to remove the needle and close the syringe with a sterile cap (Luer-Lock) to reduce the pressure inside.
Needles cannot be stored for reuse. Even if you thoroughly wipe the needle with alcohol, microscopic damage to the metal section and tissue debris from the previous patient render it unusable. Always use a new needle for each drug withdrawal or administration.
☑️ Check before use
If you use reusable bottles (which is typical for some professional lines), the neck of the bottle must be treated with an alcohol wipe before each collection of the drug. This will prevent bacteria from being introduced into the container upon repeated contact with the needle.
Risks and complications when violating the rules
Ignoring storage rules is fraught with serious health consequences. The most common complication is infectious process. Administration of a drug containing bacteria may cause an abscess, cellulitis, or tissue necrosis. Treatment of such conditions requires surgery and long-term use of antibiotics.
Another risk is an allergic reaction. Hyaluronic acid breakdown products or denatured proteins can be perceived by the immune system as aggressors. This results in severe swelling, redness and itching that does not go away on its own. In some cases, anaphylactic shock may develop anaphylactic shock.
⚠️ Attention: If after administration of the drug the body temperature rises or pulsating swelling appears, consult a doctor immediately. Delay can cost you your health.
It is also worth remembering the risk of the formation of fibrous capsules around the injected substance. An unstable gel can provoke the body to create a dense shell, which will lead to deformation of the correction area and require removal of the enzymatic dissolution filler (enzymatic breakdown).
Frequently asked questions (FAQ)
Is it possible to freeze the filler to extend its shelf life?
No, freezing is strictly prohibited. Ice crystals destroy the molecular bonds of hyaluronic acid, which leads to an irreversible change in the structure of the gel. After thawing, the drug will lose its properties and become dangerous for administration.
How long can you hold the syringe in your hand before administration?
It is not recommended to hold the syringe in your hand for more than 10-15 minutes before administration. The warmth of your hands can heat the drug above the permissible storage temperature, which will accelerate the degradation of the components, especially if it is a biorevitalizant with vitamins.
What to do if the filler becomes cloudy 2 hours after opening?
You cannot use such a drug. Cloudiness is the first sign of bacterial growth or a chemical reaction. Throw away the syringe to avoid the risk of infection and inflammation.
Does the material of the syringe affect the shelf life?
Yes, medical syringes made of polypropylene are inert, but with prolonged contact with some aggressive components (for example, highly concentrated acids), the plastic may react. Therefore, storing in a factory syringe is preferable to transferring it into another container.
Is it possible to store the filler next to food?
It is extremely undesirable. Food vapors, spices and odors can penetrate the micropores of the packaging plastic, changing the pH of the environment or causing chemical reactions in the composition of the drug. Provide a separate shelf or container for cosmetics.
In conclusion, it is worth emphasizing that compliance with storage rules is not just a formality, but a necessary condition for safety. Hyaluronic acid is a living component that requires careful handling. Following the manufacturer's instructions and common sense will help to avoid complications and maintain the desired effect of the procedure.