Lock in hair colour with a weekly dose of TIGI S-Factor Colour Savvy Balance Boosters. A protective barrier seals in moisture & adds superior shine to leave your hair colour vibrant for longer. Four intense doses TIGI S-Factor Colour Savvy Balance Boosters contain key elements from TIGI’s Healthy Hair Complex optimising colour retention by improving the overall condition of your hair & protecting against harmful effects of the environment. It provides a protective barrier to seal the cuticle keeping colour fresh for longer.