Yardlie Conditioner Serum & Keratin Smooth is a professional-grade 2-in-1 hair conditioning treatment that combines the benefits of a serum and keratin enriched formula to help you achieve soft, smooth, frizz-free, and healthier-looking hair at home. It’s designed as part of Yardlie’s hair care range, inspired by UK formulations, and offers multi-benefit hair care with easy, everyday use