Lime Aid: This is the best for correcting reddish or orange eyebrows. If the red is very dark, try mixing Lime Aid with Cool-it or using Irish Moss to neutralize before applying new color. Lime-Aid can also be used to cool down any light-medium eyebrow color. If Lime-Aid is mixed with a dark brown, it will cool and lighten it at the same time. To cool a dark brown without lightening it, mix in a little Cool-it, Irish Moss, or Jade Granite Instead.