Amika
Bust Your Brass Toning + Strength Repair Mask
Blonde Brightening
The week’s brass reset. In one mask.
Concentrated toning and bond repair mask — the deepest brass control and structural repair in the Bust Your Brass range.
- Repair
- Breakage
- Blonde tone
- Treat
B-Corp · Concentrated Toning · Bond Repair · Blonde + Grey · Weekly Treatment · Vegan
This is probably for you if…
- Blondes whose brassiness builds up faster than a shampoo alone can manage
- The weekly intensive step for committed Bust Your Brass system users
- Heavily bleached or platinum hair needing the strongest toning and repair available
- Those who want the most tone correction possible in a single weekly session
In stock + ready to ship
Unopened + unused items may be eligible for exchange or store credit within 14 days. Returns policy
- Free shipping $100+Canada + U.S. · duties included
- Packed by ModaBowmanville, Ontario
- Earn Inner CirclePoints on eligible orders
Use it with
Complete the routine.
A simple system layered for your hair.
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02 Condition Bust Your Brass Cool Blonde Repair Conditioner
Cool. Soft. Repaired. Blonde done properly.
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03 Treat Bust Your Brass Toning + Strength Repair Mask
The week’s brass reset. In one mask.
You are here
Add the full routine.
$148.00$118.40You save $29.60
What it does
- More concentrated toning than shampoo or conditioner — visible brass reset in one session
- Deepest bond repair in the Bust Your Brass range
- 5-15 minute contact time — more time means more toning and more repair
- B-Corp certified — vegan, cruelty-free
Perfect for
- Blonde
- Highlighted
- Balayage
- Grey
- And heavily bleached hair
How to use
- After shampooing, apply to towel-blotted, damp hair mid-lengths to ends. Leave 5-15 minutes. Rinse. Use weekly or as needed.
Routine step
Why we like it
The Moda Team Review
The weekly deep session for blondes who need more than a toning shampoo can deliver. The mask concentrates the pigment and bond repair actives for a single application that does the heavy lifting — tone reset and structural repair in one.
Read full stylist notes
The platinum blonde client who uses the BYB Shampoo twice a week but their hair still goes noticeably warm by week 3. Adding the mask weekly gives them the concentrated toning session the shampoo alone can’t deliver — they stay cooler, longer. Amika built Bust Your Brass as a complete blonde toning and repair system. The mask is the weekly anchor of that system — the concentrated session that keeps the daily products working at their best.
Moda
What’s inside — and why it’s there
The ingredients worth knowing.
- Concentrated Purple PigmentA higher density of violet colour molecule per gram than the shampoo or conditioner. With adequate contact time, this delivers a visibly ...
- Concentrated Bond Repair ComplexMore bond-building actives per application than the daily products — the deepest structural repair step in the range.
View full ingredient list
Ultra-violet pigments help tone warmth. Bond fortifying technology, plant butters, vegan protein, and sea buckthorn support strength, hydration, softness, and shine.
How to use
Use it the way we would.
- After shampooing, apply to towel-blotted, damp hair mid-lengths to ends. Leave 5-15 minutes. Rinse. Use weekly or as needed.
Moda stylist tipTowel-blot before applying — the purple pigment deposits significantly more effectively on damp rather than saturated hair. That one step noticeably increases the toning result for the same contact time.
Reviews
Questions? We get them.
Good to know.
The questions we hear most about this product. If yours isn’t here, a real stylist will answer.
Ask ModaShould I use the Bust Your Brass Mask instead of the shampoo and conditioner, or in addition?
Yes — either approach works. The mask alone weekly (replacing conditioner on mask days, non-toning shampoo on others) is a valid minimal system. The full system — shampoo and conditioner 1–2x per week plus mask weekly — delivers the most consistent toning and repair.
How long should I leave the Bust Your Brass Mask on?
Yes — 5–10 minutes for the concentrated toning and repair benefit. For heavily brassy hair, extend to 20 minutes under a shower cap. The concentrated formula deposits more pigment and bond repair actives with longer contact time.
My hair goes brassy within two weeks of a toning appointment. Will this mask actually maintain tone?
Yes — consistent weekly use of the Bust Your Brass Mask is one of the most effective at-home methods for extending toning results. The concentrated pigment combined with bond repair means the mask actively restores tone while improving the structural health that allows colour to hold longer.
Will the Bust Your Brass Mask damage my hair from the pigment?
No — the purple pigment in Bust Your Brass is a colour-depositing dye, not a bleach or developer. It doesn't chemically alter hair structure. The mask's bond repair actives actually improve hair condition, not compromise it.
Is the Bust Your Brass Mask appropriate for fine blonde hair?
Yes — apply mid-lengths to ends only and rinse thoroughly. Fine hair benefits from the bond repair, and the toning effect works regardless of hair density. Keep away from roots and don't over-concentrate the mask at the scalp.
Works with this
Works with this.
Returns
Unopened + unused products may be eligible for exchange or Moda store credit within 14 days.
Returns policy
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