I used Clairol Perfect 10 Dark Blonde (7) on my light brown hair, but my own nautral red/brassy undertones were exacerbated by this hair dye. The dye resulted giving my hair a strong red/orange undertone. It worked in 10 minutes and my hair doesn't feel like straw but I would not recommend this to someone who has red undertones if they want to be more dark blonde. Also, I have a sensitive skin and this really hurt my scalp compared to other home dye kits. I'm going to try the Clairol Brass Free to see if it helps.