WHAT IS IT? An innovative chelating spray capable of attracting and neutralizing the most common heavy metals from the scalp and hair. Preserves color and its intensity overtime. Prepares hair for any type of treatment. HOW TO USE? Apply the product to dry, unwashed hair in large sections, saturating evenly from roots to ends. Leave on for 2 to 10 minutes. CLINICALLY PROVEN -100%* reduction in heavy metal adhesion. Color protection up to 68%**. *analysis of the most common heavy metals present in the urban environment. **repeated applications of Metal No More Spray · PRO Format: 250 ml bottle Pre-treatment spray for scalp and hair active against metals Suitable for all hair types, this innovative spray contains ingredients that act like magnets that attract and neutralise metals present on the scalp and hair, which can compromise the colour and the natural elasticity. Thanks to the Trichopower™ Science-enhanced formula, based on a mix of essential peptides and plant extracts, the hair will be visibly healthier, softer, shinier and the color will last longer. All Hair Types ➰ Protects Scalp ➰Color Longevity ➰ Silicone Free➰Paraben Free ➰ Mineral Oil Free I do not see any expiration date on this item