Ash Splash Duo: The Two-Step System to Banish Brassy Blonde

Warm, brassy tones are the price that blonde, ash, and grey hair quietly pays over time. Whether it’s due to UV exposure, hard water minerals, or heat styling, that clean salon tone eventually gives way to stubborn yellow and orange undertones.

You don’t need an emergency trip back to the salon to fix it. You just need targeted colour correction.

The Medihair Ash Splash Duo, consisting of an intensive Treatment Mask and a lightweight Leave-In Spray, is designed to cool down your tone, eliminate brass, and deeply condition your hair simultaneously. Here is a breakdown of how this science-backed system works and how to use it correctly.

Step 1: The Deep Reset; Ash Splash Treatment Mask

When brassiness has fully crept in and your colour looks dull or faded, the Ash Splash Treatment Mask is your heavy-hitting solution.

What It Does

This is an intensive toning mask that deposits cool-correcting pigments into the hair shaft to neutralize warm yellow and orange tones, bringing your blonde or grey back to a clean, true shade. Because bleached hair is inherently fragile, it doubles as a deep conditioning treatment and detangler, leaving hair soft and highly reflective.

How the Science Works

While the specialized pigments (CI 50415 and CI 77266) counteract warmth on the surface, the conditioning base repairs structure underneath:

  • Hydrolysed Keratin: Strengthens and reinforces strands left fragile by chemical lightening.
  • Hyaluronic Acid & Panthenol: Humectants that draw in and seal moisture, preventing the dry, straw-like texture common to processed hair.
  • Wheat Germ & Jojoba Seed Oils: Rich in Vitamin E and essential fatty acids to support the hair’s natural barrier, restoring smoothness and natural shine.

How to Use It

  1. Prep: Wash hair thoroughly (ideally with our Ash Splash Shampoo) and towel-dry. Put on a pair of gloves, as the concentrated pigments can stain your hands.
  2. Apply: Work the mask from roots to ends, section by section, ensuring complete, saturated coverage.
  3. Distribute: Comb through carefully with a wide-toothed comb. This step is vital to ensure an even tone with no patchy spots.
  4. Process: Pop on a shower cap and leave it to work for at least 30 minutes. Pro-tip: The closer you stay to the full time, the stronger the toning effect. If it’s your first time, run a quick strand test first.
  5. Rinse: Rinse thoroughly with cold water to close the hair cuticle and lock in the shine.

Step 2: The Daily Maintenance; Ash Splash Spray

You don’t always have 30 minutes for a full masking session, and you shouldn’t over-process your hair with heavy treatments every single week. That’s where the Ash Splash Spray comes in.

What It Does

This is a lightweight, leave-in toning treatment designed for rapid maintenance. It allows you to target specific brassy areas on demand, depositing a quick platinum or grey tint while detangling and adding moisture without weighing the hair down.

How to Use It

  1. Cleanse: Start with freshly washed, towel-dried hair.
  2. Target: Spritz the leave-in spray directly onto the areas showing the most warmth, usually concentrated around the hairline, front sections, and ends.
  3. Blend: Comb through thoroughly to spread the product evenly.
  4. Style: Do not rinse it out. Leave it in to protect your tone and style your hair as usual. Note: Build the product up gradually across washes rather than soaking the hair all at once to keep the finish looking natural.

The Payoff

 IF YOUR HAIR IS... YOUR STRATEGY IS...
Deeply brassy, orange, or dull all over Use the Treatment Mask for a full 30-minute reset
Slightly warm or patchy between washes Use the Spray on damp hair to target specific zones instantly
In need of total maintenance for a crisp, cool blonde Use both in tandem: Mask weekly Spray to maintain the tone

By balancing deep pigment correction with structural hydration, the Ash Splash system ensures your hair remains bright, cool, and strong. No unnecessary steps, no complex routines just clean, salon-fresh blonde you can easily maintain at home 

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