L’Oréal Paris Preference Permanent Hair Dye 645 Chic Auburn

Preference Permanent Hair Dye by L’Oréal Paris is a salon-quality color you can apply at home with up to 9 weeks of fade-defying color and high-impact shine. Designed for lasting, luminous tones, this variant 645 Chic Auburn Brown offers rich depth and vibrant warmth for grey coverage and multi-dimensional shine.

Key benefits

• Salon-quality color at home delivers 100% grey coverage with long-lasting fade-defying color thanks to a higher concentration of dyes.
• Fade-defying system provides rich tones that stay true from root to tip for weeks, reducing the need for frequent touch-ups.
• No-drip oil-in-gel formula adheres well to hair during application, helping you achieve an even, smooth color without messy drips.
• Shine Protect Conditioner leaves hair feeling soft and silky to the touch after color is processed and rinsed.
• Broad shade range Over 50 luminous shades offer a wide spectrum of tones to match your preference and undertone.

Ingredients and what they mean for you

• Aqua / Eau — water base that hydrates during the mixing and coloring process.
• Hydrogen Peroxide — an oxidizing agent that opens the hair cuticle to allow color molecules to penetrate and develop the new shade.
• Cetearyl Alcohol — conditioning fatty alcohol that helps soften hair and improve texture after dyeing.
• Trideceth-2 Carboxamide Mea — a surfactant that helps the product spread evenly through hair for consistent color uptake.
• Ceteareth-25 — an emulsifier that assists in blending the color mixture for uniform results.
• Glycerin — humectant that helps maintain moisture during color processing, reducing dryness.
• Phosphoric Acid — helps balance the formula’s pH for safe application on hair and scalp.
• Tetrasodium Etidronate / Tetrasodium Pyrophosphate — chelating agents that help prevent mineral build-up from water, aiding color consistency.
• Sodium Salicylate — used for its cleansing properties within the formulation and to support overall texture.

Usage tips and suitability

• Before coloring, perform the 48-hour allergy test as directed to ensure you don’t react to the product.
• Follow the included steps to apply and process for grey coverage and vibrant color.
• Use the Shine Protect Conditioner after rinsing to help maintain softness and shine.
• Keep out of reach of children and store in a cool, dry place after opening if instructed by the packaging.

The above guidance reflects practical experience with the product line, including typical processing behavior of dye formulations and post-color conditioning expectations. 645 Chic Auburn Brown is a part of the shade collection designed to deliver warmth and depth while staying true to the chosen tone across weeks of wear.

Disclaimer: This product is not intended to diagnose, treat, cure, or prevent any disease. Always read and follow the product label. Consult a healthcare professional if you have any health concerns.