Use the ghd Smooth and Finish Serum as the finishing touch to any style. Smooth & Finish Serum is a luxurious finishing serum that adds instant shine and lustre to hair with each application. It is great for adding shine and smoothness to straight styles; taming and defining curls and waves; controlling flyaway hair caused by static; disguising the appearance of split and dry ends. ghd Style Tip: For extra smoothness in curly, frizzy and coarse hair, work some serum through your mid-lengths and ends whilst damp and then blow-dry and style. Brand : ghd. Hair Concern : Shine.