What is It? Brow Colourfix is a brush-on tinted brow gel that grooms brows in shape and creates a fuller look in one simple step. Why you'll love it This budge-proof tinted gel has a strong hold that sets hairs in place while adding colour to create naturally fuller looking brows. Its silky formula is infused with candelilla wax, castor seed oil and pro vitamin B5 to help condition and care for hairs.