The K18 Biomimetic Hair Science Shield + Smooth Routine is a three-step, limited-time daily routine for effortlessly stunning hair and the ultimate armor against frizz, flyaways, and hair damage. Begin your hair transformation journey with pH protective shampoo, meticulously crafted to cleanse and protect from damage. Then, fortify your hair's defenses with our protective conditioner, providing lasting protection against UV rays and environmental stressors for up to 3 days. Lastly, seal the deal with the trial-size oil for instant and long-lasting frizz control, leaving your hair stronger, shinier, and with heat protection of up to 450°F (232°C). Let your hair shine with vitality and strength with K18's powerful trio!