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Good hair days have become good hair weeks with TRESemmé 7-Day Keratin Smooth System. A breakthrough in hair technology using Heat Activated Polymers to provide long lasting, salon looking hair that stays resistant to frizz and beautiful for up to seven days*. TRESemmé 7 Day Keratin Smooth System’s unique formula cares and nourishes from root to tip, ensuring the condition of your hair is not compromised. Its patented Thermal Technology works with the heat of your straighteners to produce a sleek, salon style that even lasts through washes. Salon styling results are achieved effortlessly with hair maintaining its natural movement, without leaving the hair feeling coated. Tipped as THE fast-track fix to smoother, more manageable hair, Keratin 7 Day Smooth System makes slaving over constant styling and straightening a thing of the past. *up to 3 washes

Rather than just fighting against damage, the TRESemmé 7 Day Keratin Smooth 7 Day system is designed to work with your irons and wands. The revolutionary Thermal Technology is activated by the high temperatures to help smooth tresses for 7 days or up to 3 washes. Enjoy healthy-looking hair and that just-left-the-salon feeling every day of the week. * vs leading TRESemmé shampoo