Would this be effective on piano black gloss interior trim?

Piano Black is a glossy hard plastic that is NOT porous. Trim Serum is made to the best of my knowledge to be used on porous surfaces that are not excessively glossy. So I would say no it will not work.

I reapplied this product on the exterior of my car every 2 weeks to keep it look like new. If not, it faded and washed out completely. Is it normal?

Hi Thanks for reaching out. It is difficult to say what what may be happening without seeing photos. If you could send us one of the surface you are applying the product to- that would be an incredible help in determining some cause and effect. Our test results over the last year have shown the product to last 2 to 6 months depending on the type of plastic and the environment. When we test we do half a panel then expose it to different types of abuse, multiple washes, cleaners, salt and UV light. Sometimes if you are using a high PH soap to wash your car, that can dull the finish a bit sooner. However, when we have done this multiple times the treated side always looks far better but not like it did the day the treatment was applied due to the dulling effect of the high PH. Although, the good news is all our products are unconditionally guaranteed. So if you are not satisfied, we will happily refund your money as well. But if you can send a photo I am sure can help you get more life from the product as well. Hope this helps.

I have some boots with old, hardened rubber soles. Will this restore them?

Might shine them a bit…. Probably won’t restore

Can you use the trim serum on the interior? Like plastic door pannels and the dash?

You can use it on any plastic surface exterior and interior

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Trim Serum- Plastic Restorer for Cars- Restores Even the Most Damaged Plastic, Rubber, and Vinyl - Black Trim Restorer That Lasts For Months - Penetrates Plastic Pores Restoring Color (16 Oz)

Product ID: 110184664

Details

Brand
Lithium Auto
Item Form
Liquid
Item Weight
16 ounces
Recommended Uses For Product
Cleans Removes

🖤Restores deep factory-black color instantly

⚗️Highly concentrated premium polymers

🛡️UV protection for months-long durability

¥12304

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖤 Bring your car’s trim back to life—because faded is so last season!

PREMIUM FORMULA - Small-batch, top-tier polymers ensure long-lasting, vibrant results
ALL WEATHER SHIELD - Built-in UV inhibitors protect against cracking, drying & oxidation
TRUSTED PERFORMANCE - Backed by Lithium Auto Elixir’s warranty and 4.5-star user acclaim
INSTANT COLOR REVIVAL - Transforms faded plastic, rubber & vinyl to rich black in seconds
EFFORTLESS APPLICATION - Mess-free, quick-dry serum leaves no greasy residue—just a few drops needed

Trim Serum by Lithium Auto Elixirs is a 16 oz premium plastic restorer that penetrates pores to revive and protect faded plastic, rubber, and vinyl surfaces with a deep black finish. Featuring UV inhibitors and a highly concentrated formula, it delivers months of durable protection against environmental damage, all with a quick, mess-free application trusted by thousands of car enthusiasts.

Specifications

ASIN	B07MTQP514
Best Sellers Rank	#41,503 in Automotive ( See Top 100 in Automotive ) #79 in Automotive Plastic Care Products
Brand	Lithium Auto Elixirs
Brand Name	Lithium Auto Elixirs
Customer Reviews	4.5 out of 5 stars 2,138 Reviews
Item Form	Liquid
Item Weight	16 ounces
Manufacturer	Lithium Auto Elixirs
Model Number	10
Number of Items	1
Part Number	LI-005
Recommended Uses For Product	Cleans, Removes Oxidation, For Paint Protection
Specific Uses For Product	The product can be used for restoring, protecting, and conditioning plastic and rubber surfaces on vehicles, and it is compatible with deep cleaning using Hyper Cleanse. Specific Uses For Product The product can be used for restoring, protecting, and conditioning plastic and rubber surfaces on vehicles, and it is compatible with deep cleaning using Hyper Cleanse. See more
UPC	692764402932
Unit Count	16 Fluid Ounces

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