Amino Acid

Lock in moisture with the fortifying power of Amino Acid-infused hair care.

  • Amino Acid Shampoo

    Amino Acid Shampoo

    Kiehl's Amino Acid Shampoo gently cleanses hair and scalp while infusing strands with essential amino acids for softness and shine. Try it now.

  • Amino Acid Conditioner

    Amino Acid Conditioner

    Transform dry and damaged hair with Kiehl's Amino Acid Conditioner. Infused with coconut oil, this nourishing formula provides weightless hydration. Buy now!