Will this stain or darken lighter-colored clothes?

No, it should not. It simply helps to keep your darks from fading with washes. Great product.

Does it help darken blue jeans? What if they are two-toned faded on purpose?

I does not darken the colors it just keeps them from fading as quickly as when you use regular detergent.

Can this be used on HE washers?

There are instructions for HE washers on the back of the bottle

Will it discolor white lettering on dark clothes?

I've used Perwoll for several years, and never had any discoloration. I think the product is great.

Perwoll Black & Fiber renew Advanced, (Wash Loads) P24BF 24

Perwoll Black & Fiber renew Advanced, (Wash Loads) P24BF 24

Product ID: 621212716

Details

Brand
Perwoll
Item dimensions L x W x H
9.2 x 14.2 x
Item form
Liquid
Liquid volume
1.4 Litres
Material Type Free
Bleach Free
Material feature
Fragrance Free

🎨Revives color intensity fast

🖤Fibrex-tech for fade protection

🧴1.4L bottle, 24 wash loads

¥30439

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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Details

Brand
Perwoll
Item dimensions L x W x H
9.2 x 14.2 x
Item form
Liquid

Description

🖤 Keep your blacks bold and brilliant — never blend in, always stand out!

CRAFTED IN GERMANY - Precision-formulated with trusted German quality for superior laundry care.
FADE PROOF YOUR DARKS - Special Fibrex-tech locks in color, keeping your black garments looking fresh wash after wash.
GENEROUS 1 4 L CAPACITY - Enough for up to 24 wash loads, balancing convenience and value for your busy lifestyle.
SMOOTH BRILLIANT FIBERS - Smooths rough fibers to enhance color brilliance and fabric feel, elevating your wardrobe’s look.
COLOR REVIVAL IN JUST A FEW WASHES - Experience vibrant, renewed color intensity that makes your clothes pop like new.

Perwoll Black & Fiber Renew Advanced uses a cutting-edge Fibrex-tech formula to prevent fading and revive color intensity in dark garments. This 1.4-liter bottle supports up to 24 wash loads, smoothing fibers for enhanced brilliance. Made in Germany, it’s the premium choice for maintaining the deep, rich look of your favorite black clothes.

Specifications

Asin	B084HGFX3J
Guaranteed Software Updates Until	unknown
Item Model Number	P24BF
Manufacturer	Perwoll
Product Dimensions	9.2 x 14.2 x 27.3 cm; 1.45 kg

Reviews

User

5x From the real price!

Unacceptable

13.10.2024

User

This stuff works

Clothes came out of the wash noticeably darker. Will be using this on all my dark clothing from now on. Wish I started using this year's ago. I would have saved so much money!

8.12.2025

User

Great Product

Great product! Keeps my dark clothes dark, and helps with pilling. Also, it makes my clothes soft with a nice scent.

30.03.2026

User

Blir inte så bra mörk toning men bra tvättresultat.

Gör bra tvättarbete, hade hoppas på mer "toning" av mörka plagg.

16.04.2026

User

Tolles Waschmittel für dunkle KleidungIch

Ich verwende das Perwoll Renew & Repair Schwarz & Faser Waschmittel seit Jahren und bin sehr zufrieden damit.Das Waschmittel ist perfekt für alle dunklen Farben. Es sorgt dafür, dass die Farben intensiv bleiben und die Kleidung wie neu aussieht. Auch nach vielen Wäschen sehen meine dunklen Kleidungsstücke immer noch gut aus.Das Waschmittel ist einfach zu dosieren und reicht für 50 Waschladungen. Es stärkt die Fasern der Kleidung, was besonders bei empfindlichen Stoffen wichtig ist. Meine Kleidung fühlt sich nach dem Waschen weich und gepflegt an.Ich kann das Perwoll Renew & Repair Waschmittel jedem empfehlen, der dunkle Kleidung hat und möchte, dass sie lange schön bleibt. Ich werde es auf jeden Fall weiter verwenden.

18.05.2024

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¥30439

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews