L'Oréal Professionnel

Blond Studio
9 Oil Developer 20-Volume

9 Oil Developer 20-Volume is rated 5.0 out of 5 by 26.

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Select Size

1 ltr.

#E3589901

Description

What It Is

Blond Studio 9 Oil Developer 20-Volume is formulated to be used with Blond Studio 9 Lightening Powder.

What It Does

Blond Studio 9 Oil Developer 20-Volume is oil-enriched to boost the overall performance of the 9-level lightener and smooth the hair cuticle. The oil-base in the developer also offers optimal mixing and application due to its creamy consistency.

What Else You Need to Know

• The 20-Volume Oil Developer is to be used on-scalp, length & ends.

• The 30-Volume Oil Developer is to be used on lengths and ends only.

• Blond Studio Oil Developer is to be mixed exclusively with Blond Studio 9 Lightening Powder.

• The item you receive might not match the imagery on our site. That’s because the packaging recently got a new look! But trust us, it’s still the same great product you ordered!

How To

Service	Mixing Ratio	Developer	Timing
Balayage	1:1	20 or 30 Volume Blond Studio 9 Developer	• Do not exceed 50 min. • Do not use heat
Foil Highlights	1:1.5	20 or 30 Volume Blond Studio 9 Developer	• Do not exceed 50 min. • Do not use heat
Global on Scalp	1:2 or 1:3	20-Volume Blond Studio 9 Developer	• Do not exceed 50 min. • Do not use heat

Service

Mixing Ratio

Developer

Timing

Balayage

1:1

20 or 30 Volume Blond Studio 9 Developer

• Do not exceed 50 min.

• Do not use heat

Foil Highlights

1:1.5

20 or 30 Volume Blond Studio 9 Developer

• Do not exceed 50 min.

• Do not use heat

Global on Scalp

1:2 or 1:3

20-Volume Blond Studio 9 Developer

• Do not exceed 50 min.

• Do not use heat

Return & Refund Policy

Purchases made in SalonCentric stores may be returned to any SalonCentric store. Purchases made through SalonCentric Customer Service, SalonCentric Business Partners, and SalonCentric.com orders Sold and Shipped by SalonCentric may be returned to a SalonCentric store; however, the return must not exceed $450 and must include the original receipt, packing slip, or invoice. For returns in-store of online orders, the refund will be credited back to the original payment method once the return has been processed. For SalonCentric.com Online Exclusive orders sold and shipped by third-party sellers, please see more details linked below for return steps.

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Ratings & Reviews

Rated 5 out of 5 by sam24 from I LOVE IT I love this product! Application is always so smooth and creamy!

Date published: 2025-01-29

Rated 5 out of 5 by Bob7 from Love this creamy developer even tho it says oil is very creamy

Date published: 2024-12-26

Rated 5 out of 5 by hairguru from powerful developer I like the creamy texture combined with the powder. It lifts very well.

Date published: 2024-12-01

Rated 5 out of 5 by Kaitlyn from Love this product I use this product, the 30 volume and the L’Oréal blond studio 9 lightener together, smooth no clumps, lightens beautifully I highly recommend

Date published: 2024-10-20

Rated 5 out of 5 by Caballero from Absolutely love how gentle yet efficient this developer is. I’ve tried others and always come back to this brand.

Date published: 2024-10-02

Rated 5 out of 5 by Marisa from the perfect developer! I never have a problem with this developer & product line!

Date published: 2024-06-17

Rated 5 out of 5 by Lucke Metzger at Blonde b from The people from Salon Centric in the Bronx are the The people from Salon Centric in the Bronx are the best.

Date published: 2024-05-26

Rated 5 out of 5 by Sunshine105 from Does it’s job Does it’s job, was gentle with the lightner

Date published: 2022-02-14