Suitable for thinning hair types, the Philip Kingsley Density Protein Spray is formulated to strengthen the feeling of brittle strands while encouraging a thicker, more voluminous effect. Enriched with hyper-branched polymers, the formula helps to plump the appearance of lengths, transforming from a flat structure on wet hair to a hexagonal shape when drying. Hydrolyzed pea protein hydrates and nourishes hair while panthenol conditions for a soft and smooth feeling.