One of these bars can replace two bottles of traditional shampoo, in addition to saving water in production. Cannabis seed oil and elderberry restore shine to dull and lifeless locks while amino acid-rich spirulina stimulates growth and softness. Each bar is vegan, pH balanced, free of surfactants and silicones, and doesn't contain any synthetic additives or fragrances. To use, glide the bar over wet hair from root to tips and massage it in and lather it up with your fingers. Wait a moment, then rinse well.