Size: 16.9 fl oz / 500 ml Firsthand Supply’s Equilibrium Shampoo is a gentle, balancing cleanser that lathers soft and rinses clean, helping replenish and hydrate without weighing hair down. Built with plant-based surfactants, rice protein, amino acids, and panthenol for a scalp-first clean that still leaves hair feeling nourished. Gentle lather that cleans effectively without stripping Balancing + nourishing formula that supports everyday scalp comfort Rice protein + amino acids help strengthen and add volume over time