L'ANZA Healing Strength Neem Plant Silk Serum gives your prematurely aged hair a boost and leave it silky soft, youthful and radiant. Formulated with the newest peptide technology, hair is boosted with strength lustre and elasticity. With the exclusive Keratin Bond System 2â„¢ which combines keratin amino acids (the building blocks of hair and nails), meadow foam flower seed complex and moisture retain complex all of which renew hair from within to promote softness and incredible shine. Other natural ingredients provide protection against free radical attack.