A warm vibrant yellow. This colour has a warm yellow (orange-appearing) base. Do not use it alone. 
Use to warm up blonde and light-to-medium brown eyebrow colours. Can add a small amount to eyebrow formulations to add warmth, golden tones and to avoid a “too cool” healed result. 

Also used to correct (neutralize) faded lighter grey eyebrows. Since this colour is a mild yellow with a  medium opacity, it normally will not correct stubborn, dark grey or darker blue eyebrows. 
See Grey Vanish or Un-Gray to correct stubborn dark grey or blue eyebrows.

 
Base:  Warm Yellow. Inorganic