Just as blondes have their purple shampoo, brunettes can rejoice that they too now have a shampoo dedicated to enhancing their color.Blue shampoo is used to help neutralize the brassy tones that can arise in brown hair that is lightened by hair colorant. It gently opens the surface cuticle of your hair and allows dye to slightly penetrate into the hair shaft. Demi-permanent dye has a low-ammonia formula. Here are a few things I wish I'd known before dyeing my hair blue. $12.99 $ 12. Depending on your hair care routine, this type of dye can last anywhere between 4 and 12 shampoos before fading. These are the best color depositing shampoos to use for every hair color. If your hair is still dark after this, bleach your hair so that it will look more blue when you dye it. Brunettes should use blue shampoo once a week. I went from brunette to mermaid hair with help of blue hair dye. Instead, it relies on a mix of lavender oil and chamomile extracts, two natural hair brighteners, to help keep your blonde hair looking bright. Black Hair Shampoo -Instant Black Hair Dye Shampoo Black Hair Dye Maintain Hair Color for Two Months 5 minutes for Men and Women By Cutelove 25mlx10 Packs. 4.2 out of 5 stars 680. "The purple/violet shampoo tones unwanted yellow and the conditioner actually deposits silvery tones back into your hair, enhancing the grey hue." It is usually paired with a low-volume developer. 99 ($1.54/Fl Oz) $18.99 $18.99. MOKERU Professional Argan Oil Hair Dye Color Shampoo 500 ML: Instant Fast Acting … Get it as soon as Wed, Dec 2. Demi-Permanent. Apply the dye by using a dye brush to ensure the dye coats all of your hair evenly. Before applying the dye, put on an old t-shirt and wrap a towel around your neck to protect your skin. FREE Shipping on orders over $25 shipped by Amazon. Shutterstock. Color depositing shampoos can boost your natural hair color or eliminate the brassiness of a dye job. Blue shampoo for brown hair. Redken Color Extend Graydient Conditioner, $22, Ulta While the best way to avoid brassiness is to ensure that your hair colorist applies the hair dye correctly, blue-based shampoo can assist in maintaining the health of your hair, removing unwanted tones, neutralizing color, and keeping it looking cool in-between appointments. There are no dye molecules in this shampoo.