Many owners of household appliances face the problem of changing the color of the internal surfaces of the refrigerator compartment. Over time, the white polystyrene or ABS plasticfrom which the shelves and walls are made loses its pristine whiteness. This occurs under the influence of ultraviolet radiation, temperature changes and contact with food products that have an aggressive chemical environment.
Returning equipment to a neat appearance is possible without replacing expensive components. In this article, we will look at proven methods to safely remove yellowness and return surfaces to an aesthetic appearance, while maintaining their structure and safety for storing food.
It is important to understand that the process of plastic oxidation often affects not only the surface layer. Deep penetration of pigments may require the use of more aggressive cleaning methods or the use of specialized compounds designed to restore polymer materials.
Causes of yellowness on plastic
The main enemy of white plastic is time and interaction with the environment. Under the influence of atmospheric oxygen, an oxidation process occurs, which visually manifests itself in the form of a change in shade. This is a natural chemical process characteristic of most polymers used in the production of household appliances.
In addition, it has a significant effect ultraviolet radiation. Even if the refrigerator is not in the sun, artificial lighting and light entering when the door is opened help break down the bonds in the plastic molecules. Old models where modern color stabilizers were not used are especially susceptible to this.
- 🔴 Contact with greasy stains and dyes from products (berries, spices, sauces).
- 🔴 Use of aggressive cleaning agents not intended for food equipment.
- 🔴 Accumulation of bacterial plaque, which can also give surfaces a yellowish tint.
Often the cause is smoking indoors or the presence of tobacco smoke in the air, which settles on all surfaces, including the inside of the refrigerator. Resins penetrate deeply into the pores of the material, and it is almost impossible to remove them with a regular soap solution.
Preparation for the cleaning procedure
Before taking active steps, it is necessary to properly prepare the work area and the equipment itself. The safety and efficiency of the process directly depend on preliminary measures. Ignoring this step may result in the cleaning agent not working or, worse, damaging the equipment.
The first step is always to completely defrost the unit. Even if the model is equipped with a No Frostsystem, you must disconnect the device from the mains and let it warm up to room temperature. This will prevent the plastic from cracking due to sudden temperature changes when in contact with cleaning solutions.
☑️ Preparing the refrigerator for cleaning
It is better to remove all removable elements, such as glass shelves, plastic containers and grilles, and wash them separately in warm water with a neutral detergent. This will allow you to efficiently process hard-to-reach areas of the case, which are usually hidden under a load of food.
⚠️ Attention: Never use metal brushes or abrasive sponges to wash the plastic inside the refrigerator. They leave microscopic scratches, into which dirt will subsequently become clogged, and it will be impossible to wash them.
Folk remedies for whitening
There are many available home recipes that help cope with yellowness without the use of aggressive chemicals. One of the most popular and effective remedies is baking soda. It acts as a mild abrasive and an excellent adsorbent that removes unpleasant odors.
To prepare a cleaning paste, mix soda with a small amount of water until the consistency of thick sour cream. Apply the resulting mixture to the yellowed areas and leave for 15-20 minutes. After this, rinse thoroughly with warm water and wipe dry with a soft cloth.
The secret of the effectiveness of hydrogen peroxide
Hydrogen peroxide is a strong oxidizing agent that destroys the chemical bonds responsible for the yellow color. To enhance the effect, you can use the “compress” method: soak a cloth in a peroxide solution, apply it to plastic and leave for several hours under polyethylene so that the product does not dry out.
Another powerful remedy is hydrogen peroxide. It can whiten even old stains. However, you should be careful with the concentration: too high a content of the active substance can, on the contrary, damage the structure of the plastic, making it sticky.
Acetic acid is also often used for disinfection and plaque removal. It copes well with grease stains, which often cause discoloration. A solution of table vinegar and water in a 1:1 ratio will help refresh the appearance of the camera.
Use of professional chemicals
If traditional methods do not give the desired result, you should turn to specialized household chemicals. There are many sprays and gels on the market designed specifically for cleaning kitchen appliances and removing difficult stains from plastic.
When choosing a product, pay attention to the “for food surfaces” or “refrigerator safe” labeling. Such compositions do not contain chlorine and other toxic substances that can be absorbed into plastic and subsequently end up in products.
| Type of product | Efficiency | Safety | Difficulty of use |
|---|---|---|---|
| Kitchen sprays | Average | High | Low |
| Chlorine gels | High | Average (requires washing) | Medium |
| Plastics for plastic | High | High | Medium |
| Wet napkins | Low (for prevention) | High | Low |
Melamine sponges are gaining particular popularity. They act like an eraser, erasing the top dirty layer. However, they should be used with caution and only on smooth surfaces, as they can create a dull appearance on glossy plastic.
Removing complex stains and plaque
Sometimes yellowness is local in nature and represents stubborn stains from specific products. For example, traces of turmeric, beets or tomato paste can permanently stain the plastic. In such cases, a targeted effect is required.
To remove fatty deposits, which often have a yellowish tint, you can use mustard powder. It breaks down fats perfectly and is safe. Dilute the dry powder with water, apply to the stain, scrub with a soft brush and rinse.
If the stain is of organic origin (mold, traces of meat), a solution of citric acid will help. The acidic environment not only removes color, but also disinfects the surface, killing bacterial spores. It is important to thoroughly rinse the treated area after the procedure.
⚠️ Attention: Do not mix different cleaning products, especially those containing chlorine and acids. This can lead to a chemical reaction with the release of toxic gases that are hazardous to breathing.
In cases where the plastic has changed color due to thermal effects (for example, next to a heating element in the freezer), it is unlikely to be restored to whiteness by chemical means. Here a change in the structure of the polymer occurs, and only mechanical grinding or replacement of the part can help.
Features of cleaning different types of plastic
Modern refrigerators use various types of plastic. Glossy surfaces require a more delicate approach, as any scratches and stains are clearly visible on them. Liquid products and soft microfiber wipes are best suited for them.
Matte plastic is more resistant to mechanical stress, but tends to quickly accumulate dust and grease in the microrelief. To clean it, it is more effective to use paste-like products that can penetrate the pores and pull dirt out.
Rubber seals on the doors require special attention. They are often the first to turn yellow due to constant contact with hands and food. It is best to treat them with special products for rubber or an alcohol solution, which will also prevent the material from drying out.
Prevention of the reappearance of yellowness
To prevent If you are wondering how to bleach the plastic inside the refrigerator next time, you should follow simple operating rules. First and foremost, store all foods in closed containers. This will prevent the evaporation of moisture and the spread of odors and dyes.
Regularly check the expiration dates of products and immediately remove spoiled ones. Rotting organic matter is one of the main reasons for the appearance of persistent plaque and discoloration of shelves. Also try not to place hot foods inside the chamber; let them cool to room temperature.
- 🟢 Wipe the shelves with a dry cloth immediately after contact with coloring liquids.
- 🟢 Use cling film or lids for all open containers.
- 🟢 Once a month, do a light wet cleaning without using strong chemicals.
Compliance with temperature conditions also plays a role. Constant temperature changes can accelerate the aging of plastic. Make sure that the thermostat is working properly and that the door is tightly sealed.
Frequently asked questions (FAQ)
Can you use acetone to remove stains from plastic?
Using acetone is strictly not recommended. It is a strong solvent and can melt the top layer of plastic, making it sticky or completely deforming the surface. Acetone is also toxic and its vapors are dangerous in a confined space.
Why does plastic turn yellow in a new refrigerator?
If yellowness appears in a new refrigerator, this may be a consequence of the use of low-quality raw materials during production or violation of storage conditions for equipment in a warehouse (for example, under direct sunlight). Also, the cause may be factory grease that they forgot to remove.
How often should you wash the inside of the refrigerator?
It is recommended to completely defrost and wash the refrigerator with detergents at least once every 3-4 months. Wet cleaning to remove fresh stains should be done as needed, immediately after stains are discovered.
Is it safe to use toothpaste for cleaning?
Yes, regular white toothpaste (not gel) can be used as a mild abrasive. It contains fine abrasive particles that polish the surface, and mint that eliminates odors. However, after cleaning it must be washed off very carefully.