amika Bust Your Brass Cool Blonde Repair Shampoo

Keep blonde bright, cool and strong with amika Bust Your Brass Cool Blonde Strength Repair Shampoo, an ultra-violet toning shampoo formulated to cleanse while neutralizing unwanted yellow and brassy tones in blonde, silver and grey hair. Ultra-violet pigments work through colour theory to counteract yellow warmth, helping maintain a cooler-looking tone between salon appointments without actually lightening the hair. amika's bond-fortifying technologyhelps target bonds in the hair that are especially vulnerable to breakage from chemical services, heat and environmental stressors, while hydrolyzed quinoa protein provides amino acid-rich conditioning support. Mango butter, shea butter, borage seed oil and avocado oil help replenish softness and condition dry, lightened strands, while glycerin supports moisture retention. amika's signature sea buckthorn oil, naturally rich in fatty acids and antioxidant compounds, provides additional conditioning to support softness, shine and manageability. With a pH of approximately 4.5–5.5, the formula combines toning, cleansing and conditioning care in one wash-day step. When used as part of the Bust Your Brass shampoo and conditioner system, it is clinically tested to deliver 2.2× stronger hair and 55% less breakage after one use.

How to Use + Best For

Massage amika Bust Your Brass Cool Blonde Strength Repair Shampoo through wet hair, then rinse thoroughly and follow with Bust Your Brass Cool Blonde Strength Repair Conditioner. It is best for blonde, highlighted, balayage, silver and grey hair experiencing unwanted yellow or brassy tones, and amika recommends it across hair textures 1–4C. Because chemically lightened hair is often more porous and moisture-depleted, the nourishing, protein-containing formula can be particularly useful for medium-to-high porosity hair, although porosity alone does not determine whether you need a purple shampoo. Adjust frequency according to your tone—if brassiness begins to return, increase use; if your hair starts looking overly cool or violet, reduce use for a week or two. For textured or particularly dry blonde hair, follow with a moisturizing conditioner or incorporate the Bust Your Brass Toning + Strength Repair Mask when additional conditioning is needed.

Take Khair Tip: Purple shampoo doesn't make blonde hair lighter—it neutralizes visible yellow warmth, so use it according to your current tone rather than automatically reaching for it every wash.

Key Benefits: Neutralizes yellow & brassy tones • Helps strengthen damaged hair • Supports hydration • Cleanses & tones • Helps reduce breakage when used as a system • Colour-treated hair safe • Suitable for textures 1–4C

Best For: Blonde & highlighted hair • Balayage • Silver & grey hair • Brassy/yellow tones • Chemically lightened hair • Medium–high porosity* • Hair needing toning + strengthening

Key Ingredients: Ultra-Violet Pigments • Bond-Fortifying Technology • Hydrolyzed Quinoa Protein • Sea Buckthorn Oil • Mango Butter • Shea Butter • Borage Seed Oil • Avocado Oil • Glycerin

Ingredients: Water/Aqua/Eau, Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Glycerin, Disodium Cocoamphodiacetate, PEG-7 Glyceryl Cocoate, Glyceryl Stearate, Hippophae Rhamnoides (Sea Buckthorn/Argousier) Fruit/Seed Oil, Borago Officinalis (Borage/Bourrache) Seed Oil, Persea Gratissima (Avocado/Avocat) Oil, Mangifera Indica (Mango/Mangue) Seed Butter, Butyrospermum Parkii (Shea/Karite) Butter, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Lavandula Angustifolia (Lavender/Lavande) Flower Extract, Chamomilla Recutita (Matricaria/Matricaire) Flower Extract, Rosmarinus Officinalis (Rosemary/Romarin) Leaf Extract, Hydrolyzed Quinoa, Aminomethyl Propanol, Bis-PCA Dimethicone, Butylene Glycol, Sodium Gluconate, Sodium Methyl Cocoyl Taurate, Disodium PEG-12 Dimethicone Sulfosuccinate, PEG-55 Propylene Glycol Oleate, PEG-12 Dimethicone, PEG-150 Distearate, Polyquaternium-10, Polyquaternium-7, Polysorbate 20, Propylene Glycol, Citric Acid, Dehydroacetic Acid, Benzyl Alcohol, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate, Benzoic Acid, Fragrance/Parfum, Benzyl Benzoate, Hydroxycitronellal, Limonene, Ext. Violet 2 (CI 60730).

*Porosity recommendation is based on the product's formulation and the needs commonly associated with chemically lightened hair rather than an official amika porosity classification.

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