BBCOS Emphasis Yao-Tech Plumping Filler The BBCOS Emphasis Yao-Tech Plumping Filler is a multi-sensory treatment that provides an immediate restructuring and plumping effect. It’s formulated with a blend of natural ingredients, including aloe vera, Nori algae, and hydrolyzed wheat protein. These ingredients help to hydrate, protect, and strengthen hair, while also defending it against damage from pollution. The filler also contains Isoepidermal pH, which is suitable for sensitive and delicate skin types. Additionally, the formulas contain 90% of naturally derived raw materials that deliver antioxidant power.