Review on 🔵 Redken Color Extend Brownlights Blue Shampoo – Premium Hair Toner for Brunettes, Natural & Color-Treated Hair – Brass Neutralizing Formula – Sulfate Free by Cynthia Trahan

I've only used this once so this is a preview. I've been dying my hair brown regularly for about 6 years. In the last year or so I've noticed that the brown color turns reddish quickly. It never occurred to me that it means "copper". I asked my stylist about it, she suggested making it darker. It was of no use. During the coronavirus pandemic, I watched a lot of videos about hairstyles. Brad Mondo suggested using tonic. My stylist stated that she doesn't and knew little about it. So I took a chance and bought it. In a shampoo I would say 75 percent of the copper is gone.