- Colgate Max White Purple Serum 40ml is an instant fluoride-free teeth whitener - Dual action formula: instantly corrects tooth color and provides long-lasting whitening results - Contains micro-polishing minerals that remove surface stains with continued use - Color-correcting technology for a whiter smile from the first use - Refreshing mint and citrus flavor that leaves your breath fresh - Clinically proven: visible improvement in tooth whiteness after 14 days of use - Does not damage enamel and is suitable for daily use - Used after regular brushing to enhance the whitening effect - Ideal for those seeking a brighter, healthier smile