Redken
Blonde IQ 9+ Calibrated Anti-Brass Lightener

Blonde IQ 9+ Calibrated Anti-Brass Lightener is rated 4.9 out of 5 by 259.
  • y_2026, m_8, d_13, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.48
  • cp_1, bvpage1
  • co_hasreviews, tv_79, tr_180
  • loc_en_US, sid_redken-blonde-iq-9-lightener, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_saloncentric
  • bvseo_sdk, dw_cartridge, 17.1.0, p_sdk_3.2.0
  • CLOUD, getAggregateRating, 5ms
  • reviews, product
Blonde IQ 9+ Calibrated Anti-Brass Lightener
Preview image 1 of Blonde IQ 9+ Calibrated Anti-Brass Lightener
watch the product video
Select Size
Available options to select
1.1 lb
#P2907000
Redken Blonde IQ Blonding Toolkit
Auto Replenish:
FREE SHIPPING OVER $50 & EARN 100 PROREWARDS POINTS
  • Choose your frequency. Skip or cancel anytime.
  • Free shipping over $50* & 100 ProRewards Points++ on all recurring orders.
  • Select auto-delivery in cart.
  • Exclusions apply.
Learn More
Purchase Options
Find in-store availability
saloncentric credit card take charge Learn More

What It Is

Redken Blonde IQ 9+ lightener for calibrated anti-brass results with up to 9 levels of lift.

What It Does

Redken’s Blonde IQ 9+ Calibrated Anti-Brass Lightener is a dual-action oil-powered system designed for advanced neutralization and up to 9 levels of powerful clean lift. The proprietary technology efficiently drives neutralization power to the hair’s core; breaking down eumelanin and pheomelanin for your most neutralized blonde.

Perfect for balayage, foiling and all over blonding, Redken Blonde IQ 9+ is to only be used with Redken Pro Oxide Oil Developers 10 – 30 Volume to guarantee precise results you expect.

What Else You Need to Know

Redken Blonde IQ 9+ provides no swelling, better saturation, even lift, and precise application, delivering a powerful clean lift for all hair types and textures. Its versatile formulation is ideal for a wide range of services, including balayage, foiling, and all over blonding.

Wear suitable disposable gloves. Mix product in a well-ventilated area. Follow mixture ratios carefully, or damage to hair or scalp including irritation, hair loss or chemical burns could occur.

1. Put the recommended amount of Blonde IQ™ 9+ Lightener and Pro-Oxide Oil Developer 10V (3%), 20V (6%) or 30V (9%) in a non-metallic bowl.

2. Blend until smooth creamy consistency is achieved.

POTASSIUM PERSULFATE - SODIUM SILICATE - AMMONIUM PERSULFATE - MAGNESIUM CARBONATE HYDROXIDE - SODIUM STEARATE - MINERAL OIL - SODIUM LAURYL SULFATE - DISODIUM EDTA - HYDROXYETHYLCELLULOSE - ACRYLATES/C10-30 ALKYL ACRYLATE CROSSPOLYMER - CI 77007 / ULTRAMARINES - SODIUM CITRATE

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.

The SalonCentric return policy does not currently apply to Kérastase & Shu Uemura purchases. Kérastase & Shu Uemura do not accept returns.

Click to see more details.

Rated 5 out of 5 by from lightener This is an amazing lightener. It is super smooth and mixes perfectly for a beautiful application. It has given me the best lift out of all the lighters I have tried.
Date published: 2026-08-11
Rated 5 out of 5 by from Love Love this lightener. It’s creamy, soft on the hair, and the blue really does help with my level 3-4 clients. It’s easy to mix and doesn’t swell.
Date published: 2026-08-11
Rated 5 out of 5 by from Clean, Bright Blonde Results Every Time We use Redken Blonde IQ 9+ Anti-Brass Lightener at our salon and love the beautiful results it delivers. It lifts consistently while helping control unwanted brassy tones, leaving the hair clean, bright, and ready for the perfect toner. It is dependable, easy to work with, and has become one of our trusted products for blonding services.
Date published: 2026-08-10
Rated 5 out of 5 by from great lightener Lifted so beautifully with minimal strain on the hair strand
Date published: 2026-08-10
Rated 5 out of 5 by from Love this oil base product, GREAT RESULTS Wuaooo, tremendo bleach este, me encanto usarlo, compre el de 1.1 oz y la verdad le dejo el pelo a mi clienta, belloooo. Lo súper recomiendo. Love this bleach mybcustomer hair came out beautifully blonde! Love it. Buying a bigger one now!
Date published: 2026-08-08
Rated 5 out of 5 by from New favorite This is definitely my new favorite. It doesn’t swell a whole lot and lifts perfectly everytime I use it.
Date published: 2026-08-07
Rated 5 out of 5 by from Go to What's not to love about this product! 20 minute processing time
Date published: 2026-08-06
Rated 5 out of 5 by from Top tier lightener I can definitely say I love this lightener! It lifts amazing. I love the brass fighting addition it has. It doesn’t swell which is a major plus. My only wish is that there was a 3o volume developer for it. Other then that it’s great!
Date published: 2026-08-06
  • y_2026, m_8, d_13, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.48
  • cp_1, bvpage1
  • co_hasreviews, tv_79, tr_180
  • loc_en_US, sid_redken-blonde-iq-9-lightener, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_saloncentric
  • bvseo_sdk, dw_cartridge, 17.1.0, p_sdk_3.2.0
  • CLOUD, getReviews, 5ms
  • reviews, product