Amika suggests applying the Bust Your Brass products on a test strip of hair at the nape of the neck before settling on a routine. For natural blondes (not color-treated): In the summer months (when hair is more likely to become brassy), use the shampoo every other wash.

For Platinum Blondes: To maintain tone, use the shampoo every other wash.

For highlighted, balayage, or natural-looking (color-treated) blonde hair: Use Bust Your Brass Shampoo every other wash. Assess hair's tone and pivot (increase or decrease usage) as needed.

Water/Aqua/Eau, Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Glycerin, Sodium Methyl Cocoyl Taurate, 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, Disodium Edta, Disodium Peg-12 Dimethicone Sulfosuccinate, Peg-55 Propylene Glycol Oleate, Peg-12 Dimethicone, Peg-150 Distearate, Peg-150 Stearate, Polyquaternium-10, Polyquaternium-7, Polysorbate 20, Propylene Glycol, Polyethylene Glycol, Citric Acid, Dehydroacetic Acid, Benzyl Alcohol, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate, Benzoic Acid, Stearic Acid, Sodium Chloride, Fragrance/Parfum, Benzyl Benzoate, Hydroxycitronellal, Limonene, Ext. Violet 2 (Ci 60730)