NYX Professional Makeup Eyebrow Cake Powder To define your hairline and make it look fuller, use an eyebrow powder like the NYX Professional Makeup Eyebrow Cake Powder ($6) to fill in the sparser areas. Just pick up the powder with a brush and sweep it through. Image Source: nyxcosmetics.com NYX Professional Makeup Eyebrow Cake Powder $6 from nyxcosmetics.com Buy Now