DIA
DIActivateur Developer 9-Volume

DIActivateur Developer 9-Volume is rated 4.8 out of 5 by 33.
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What It Is

DIActivateur 9-vol. (2.7%) Developer is formulated to be used with:

• DIA Light Demi-Permanent Haircolor on color-treated or sensitized hair.

• DIA Richesse Demi-Permanent Haircolor on natural or color treated hair.

What It Does

9-vol. DIActivateur Developer pairs with DIA Light and DIA Richesse to create beautiful results for unlimited services.

What Else You Need to Know

DIA Light & DIA Richesse mix in a 1:1.5 ratio with 9-vol. (2.7%) DIActivateur Developer. DIActivateur Developer is formulated to be paired with DIA for best results.

 

DIA Light

• Use 6-vol. or 9-vol. (use 9-vol. when going darker)

 

DIA Richesse

• Use 9-vol. or 15-vol. (includes DIA Richesse Hi-Visibility)

• Mix ratio 1:1.5 (1 tube : 2.6 oz. developer)

• Apply with a bowl and brush or plastic bottle

• Development time from 2-20 minutes

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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Rated 5 out of 5 by from The perfect utility developer This is the perfect level for demipermenants and toners. I love being able to add depth without leaving a harsh line down the road. Both DiaLight and DiaColor have incredible vibrancy even when using 9vol.. heck it's vibrant with 6vol if you choose the right canvas/tone combo! Absolutely my favorite color line.
Date published: 2025-04-11
Rated 5 out of 5 by from Great developer Love using this product around frame of face where hair is more delicate.
Date published: 2024-07-22
Rated 5 out of 5 by from 9 Volume developer Love this low volume developer for depositing color with no lift.
Date published: 2022-10-07
Rated 5 out of 5 by from Great Developer! I use this developer the most when I mix my Dia Richesse colors. It gives you amazing deposit and a little gray blending. I also use it for highlighting to give a gentle lift.
Date published: 2018-03-22
Rated 5 out of 5 by from L’Oréal has the best products! Anything by L’Oréal professional is perfect for my clients. Versatile and dependable.
Date published: 2017-11-28
  • y_2025, m_5, d_10, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_28, tr_5
  • loc_en_US, sid_loreal-professionnel-dia-developer-9-volume, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_saloncentric
  • bvseo_sdk, dw_cartridge, 17.1.0, p_sdk_3.2.0
  • CLOUD, getReviews, 6ms
  • reviews, product