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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🖤 Restore your ride’s sleek edge — don’t let faded trim hold you back!

PREMIUM POTENCY - Crafted in small batches with top-tier polymers for superior restoration.
ALL WEATHER ARMOR - Built-in UV inhibitors protect trim from sun damage, cracking, and oxidation.
EFFORTLESS ELEGANCE - Mess-free, quick application dries clean without greasy residue.
FACTORY BLACK BRILLIANCE - Revives faded plastic and rubber to a rich, lasting black finish in seconds.
GUARANTEED TRANSFORMATION - Backed by Lithium Auto Elixir’s unconditional warranty for unmatched results.

Lithium Auto Elixirs Trim Serum is a high-performance plastic restorer that instantly renews faded car trim to a deep factory-black finish. Its advanced formula penetrates plastic pores, providing months of UV protection and preventing cracking and oxidation. Easy to apply and mess-free, this 16 oz serum is crafted with premium ingredients and backed by a satisfaction guarantee, making it the ultimate solution for maintaining your vehicle’s sharp, polished look.

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Manufacturer	Lithium Auto Elixirs
Brand	Lithium Auto Elixirs
Item Weight	1 pounds
Package Dimensions	7.13 x 2.87 x 2.68 inches
Item model number	10
Is Discontinued By Manufacturer	No
Manufacturer Part Number	LI-005

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)

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