Plastic elements in the car interior require regular maintenance - without protection, they quickly fade, become covered with microcracks and lose their original appearance. Japanese brand Shima offers a line of specialized products that not only restore the appearance of plastic, but also create a protective layer from UV radiation, dust and mechanical damage. Unlike universal polishes, car chemicals Shima for plastic is developed taking into account the characteristics of automotive polymers, which guarantees a long-term effect without stickiness or greasy shine.
In this article we will analyze the entire product line Shima for plastic surfaces: from restorative compositions to protective sprays, we will compare them with popular analogues and give step-by-step instructions for use. We will pay special attention a unique formula with UV filters that prevents plastic fading 30% more effectively than standard products. You will also learn what mistakes in interior care shorten the service life of materials, and how to combine products correctly Shima for maximum results.
Why does plastic in a car interior require special chemicals?
Automotive plastic is not just a decorative element, but a material with a complex of technical characteristics. During operation, it is exposed to several types of influences:
- 🌞 Ultraviolet radiation — leads to surface oxidation, yellowing and microcracks. Dashboards and door cards are especially vulnerable.
- 🧴 Aggressive detergents — alcohol-containing or alkaline compounds destroy the top layer of plastic, making it porous.
- 🔥 Temperature changes — in the cabin it can be +60°C in summer, and –20°C in winter. This leads to deformation and loss of elasticity.
- 🚬 Nicotine and condensate — settle in the pores of the plastic, forming a sticky coating that is difficult to remove with ordinary napkins.
Standard polishes or household cleaners do not solve these problems - they only mask defects for a short period of time. Auto chemical goods Shima acts differently: its formulas contain polymer binders, which penetrate the structure of the plastic, restoring it, as well as UV blockers (for example, Tinuvin 328), preventing photoaging. It is important that the brand’s products do not contain silicones, which over time attract dust and create a sticky film.
⚠️ Attention: Never use products with abrasive particles (for example, headlight pastes) on plastic - they scratch the surface, accelerating its destruction. Also avoid products with high glycerin content: it gives a temporary shine, but after 2-3 weeks the plastic becomes sticky.
Shima line of products for plastic: comparison and purpose
Brand Shima offers several products for the care of plastic surfaces, differing in composition and purpose. Below is a comparative table of key products indicating their features and recommendations for use.
| Product | Type | Main Components | Effect | Validity period | Features of application |
|---|---|---|---|---|---|
| Shima Plastic Cleaner | Cleaner | Surfactants, solvents, antistatic | Removes dirt, nicotine, grease stains | — | Apply before polishing. Does not contain silicones. |
| Shima Plastic Restorer | Reducer | Polymer resins, UV filters, oils | Restores color, eliminates microcracks | 3–6 months | Requires pre-cleaning. Not suitable for glossy plastic. |
| Shima Plastic Protectant | Protective spray | Acrylic polymers, antistatic, preservatives | Creates a hydrophobic layer, repels dust | 2–4 months | Can be applied to a damp surface. Does not leave greasy marks. |
| Shima Interior Detailer | Universal care | Water, surfactants, flavors, conditioners | Cleaning + light protection | 1 month | Suitable for regular care. Does not repair deep damage. |
For maximum effect, the manufacturer recommends using the products in combination: first Plastic Cleaner to remove dirt, then Plastic Restorer to restore the structure, and finally - Plastic Protectant to record the result. This approach allows you to extend the “youth” of plastic by 2–3 years longer than when using only one product.
Step-by-step instructions: how to apply Shima auto chemicals
Even the most effective product will not give results if the application technology is violated. Below are universal instructions suitable for most products in the line Shima (except Interior Detailer, which is used as an express spray).
Make sure that the temperature in the cabin is +10…+25°C
Remove dust with a vacuum cleaner or dry microfiber
Cover leather/fabric elements with masking tape
Shake the bottle before use-->
Step 1: Surface Cleaning
Apply Shima Plastic Cleaner onto a lint-free cloth and work the plastic in a circular motion. For stubborn stains (such as sticker marks), leave on for 30 seconds, then wipe with a clean cloth. Avoid excess moisture - liquid should not flow down the panel.
Step 2: Restore (if necessary)
If the plastic has become dull or is covered with a network of microcracks, use Shima Plastic Restorer. Apply a small amount to the applicator and spread evenly over the surface. Let sit for 5-10 minutes, then buff with a dry microfiber cloth. For severely damaged areas, repeat the procedure 2-3 times with an interval of 1 hour.
Step 3. Protection
The final stage is application Shima Plastic Protectant. Spray the product at a distance of 15–20 cm from the surface and distribute evenly with a napkin. Remove excess after 2-3 minutes. For best adhesion, avoid direct sunlight for 12 hours after treatment.
⚠️ Attention: Do not use Shima Plastic Restorer on glossy plastic (for example, on the center console of some premium cars). This product is intended for matte surfaces only and may leave cloudy streaks on glossy surfaces. Suitable for such materials Shima Interior Detailer in combination with protective wax.
To clean hard-to-reach areas (for example, ventilation grilles), use a soft-bristled toothbrush dipped in Plastic Cleaner. This will help remove dirt from the pores without the risk of damaging the plastic.
Comparison of Shima with analogues: which is better for your car
There are dozens of brands on the auto chemical market offering products for plastic. To understand what Shima compares favorably with its competitors, let us compare it with the most popular analogues in key parameters.
| Criterion | Shima | Sonax | Meguiar’s | Liqui Moly |
|---|---|---|---|---|
| Contents of UV filters | Yes (Tinuvin 328) | Yes (no specification) | Partially | No |
| Protection period | 3–6 months | 2–3 months | 1–2 months | 1 month |
| Antistatic effect | Yes | Yes | No | Partially |
| Silicones in the composition | No | Yes | Yes | No |
| Price for 500 ml, rub. | 800–1200 | 700–900 | 900–1300 | 500–700 |
Main advantage Shima — long lasting protection thanks to the polymer formula. While most analogues (for example, Liqui Moly) require monthly reapplication, products Shima retain the effect for up to six months. In addition, the Japanese brand is the only one among its competitors that indicates a specific type of UV filter (Tinuvin 328), which confirms a serious approach to protecting against burnout.
However, Shima there are also disadvantages:
- 💰 Higher price compared to budget brands (e.g. Kangaroo or Grass).
- 🕒 Longer drying time (up to 12 hours for complete polymerization Plastic Restorer).
- 📦 Smaller range of scents - only a neutral smell or light citrus.
If your car is often parked in the open sun, Shima — the optimal choice due to enhanced UV protection. For budget care or infrequent use, you may consider Liqui Moly or Sonax.
Common mistakes when caring for plastic and how to avoid them
Even experienced car owners make mistakes that shorten the life of plastic parts. Here are the most common ones and how to prevent them:
- 🧼 Using household chemicals (for example, Mr. Proper or window cleaner). They contain alkalis that destroy plastic. Solution: Use only specialized auto chemicals, for example, Shima Plastic Cleaner.
- ☀️ Processing in direct sunlight. UV radiation accelerates the evaporation of active components, reducing the effectiveness of protection. Solution: Work in the shade or garage, and after treatment, avoid sun for 12 hours.
- 🧴 Mixing different products. For example, applying wax over a reducing agent can cause the protective layer to delaminate. Solution: Stick to one product line (for example, only Shima).
- 🚗 Ignoring surface preparation. Dust or greasy stains prevent the adhesion of the protective layer. Solution: Always clean the plastic before applying a reducing agent or protective spray.
Another common mistake is excessive passion for glitter. Many car owners apply products in layers, trying to achieve a “glossy” effect, but this leads to the opposite result: the plastic becomes sticky and quickly gets dirty. Means Shima (except Interior Detailer) are designed to create a natural matte finish that looks factory-like (like from a factory).
What to do if the plastic is already cracked?
If deep cracks appear in the plastic, repair agents alone will not be enough. In this case:
1. Clean the surface Shima Plastic Cleaner.
2. Fill the cracks with a special plastic glue (for example, Loctite Plastics Bonding System).
3. After the glue has dried (24 hours), sand the repair area with fine-grit sandpaper (P1200–P1500).
4.Apply Shima Plastic Restorer to mask signs of repair.
This approach will restore the integrity of the plastic, but complete restoration of the appearance is only possible by replacing the part.
Owner reviews: real experience using Shima
To objectively assess the effectiveness of auto chemical products Shima, we analyzed reviews from car owners on forums (for example, Drive2, Autolada) and on social networks. Here are the key observations:
Pros noted by users:
- ✅ Long lasting effect — even after 4–5 months, the plastic remains soft and not sticky (unlike silicone polishes).
- ✅ No greasy shine — the surface looks natural, without a “plastic” gloss.
- ✅ Ease of application — the sprays are sprayed evenly without forming drips.
- ✅ Burnout protection — owners of cars parked in the open air note that the plastic does not turn yellow.
Cons and nuances:
- ❌ High price — a 500 ml bottle costs 2–3 times more than budget analogues.
- ❌ Long drying time — Plastic Restorer requires 12 hours for complete polymerization.
- ❌ Not suitable for all types of plastic - on some vinyl surfaces (for example, on steering wheels Mazda CX-5) may leave whitish streaks.
Interesting fact: owners of premium cars (for example, Lexus or Mercedes) are often combined Shima Plastic Restorer with professional waxes (for example, Collinite 845) to enhance dirt-repellent properties. However, such a tandem requires testing on a small area, since not all waxes are compatible with polymer protective layers.
Where to buy Shima auto chemicals and how to avoid counterfeits
Products Shima It is officially supplied to Russia, but due to the popularity of the brand, a lot of counterfeit products have appeared on the market. To avoid running into a fake, follow these recommendations:
- 🛒 Buy from official dealers:
- Official website Shima (shipping from Japan).
- Stores: Autoprofi, Exist, Autodoc (check for certificate availability).
- Official representatives on social networks (for example,
@ShimaRussiaon VKontakte).
- 🔍 Check the packaging:
- The original bottle has an embossed logo Shima at the bottom.
- The label is printed on matte paper, the font is clear, without blurring.
- The serial number on the cap must match the number on the bottom of the bottle.
- 💳 Price - if a product is sold 30-40% cheaper than the average market price, this is a reason to doubt its authenticity.
Average cost of original products Shima in 2026:
- Plastic Cleaner (500 ml) - 800–950 rub.
- Plastic Restorer (500 ml) - 1100–1300 rub.
- Plastic Protectant (500 ml) - 900–1100 rub.
⚠️ Attention: Fake auto chemicals Shima often contains cheap silicones or solvents that damage the plastic. One of the signs of a fake is a strong chemical smell (the original smells faintly of citrus or neutral). Also, fakes can leave rainbow stains after drying.
FAQ: answers to frequently asked questions about Shima for plastic
Can Shima Plastic Restorer be used on leather inserts?
No, Plastic Restorer Suitable for plastic and vinyl only. For leather, use specialized conditioners (for example, Shima Leather Care). If the product accidentally gets on your skin, immediately wipe the area with a damp cloth - polymers can clog the pores of the material, making it hard.
How often does the protective layer need to be renewed?
The frequency depends on the operating conditions:
- For cars parked in a garage: once every 6 months.
- For regular parking in the sun: every 3 months.
- For commercial vehicles (taxi, car sharing): once every 1–2 months.
Signs that it’s time to update the protection: the plastic stops repelling dust, static electricity appears, the surface becomes rough to the touch.
Is Shima suitable for plastic in the engine bay?
No, line tools Shima for plastic Not intended for external parts (for example, engine compartment or bumpers). For these purposes use Shima Engine Bay Cleaner or Shima Bumper Restorer. Interior compositions do not have protection against high temperatures and oil contaminants.
Can Shima be applied to painted plastic?
Yes, but with caution. If the plastic is painted in the mass (for example, panels BMW or Audi), funds Shima safe. However, if paint is applied over plastic (for example, tinting parts), test the product on a small area first - some pigments may react with polymers.
What is the difference between Shima Plastic Protectant and Interior Detailer?
Plastic Protectant is a specialized protective composition with polymers and UV filters that creates a long-term layer (2-4 months). Interior Detailer - a light spray for express care that cleanses and adds a slight shine, but does not provide deep protection. The first is suitable for routine treatment 2-3 times a year, the second is for maintaining cleanliness between “deep” treatments.