GK Hair The Best Juvexin Treatment penetrates throughout the hair shaft delivering important conditioning and moisturizing benefits. Rejuvenating effects soften and strengthen hair to better withstand heat, for up to 5 months. No artificial ingredients or harsh chemicals. \n \nThe Best rejuvenates hair making it smooth, strong and frizz-free. Treatment lasts 3-5 months. The Best is a salon professional smoothening treatment and can be applied at HOME. \n \nEliminates frizz and curl, promotes healing of hair, blocks the effects of humidity, great for all hair types. \n \nThis natural smoothening treatment helps smooth hair naturally by conditioning with Natural Seed Oils and repairing damage within the hair. GK Hair pH+ Clarifying Shampoo An important step that opens the hair cuticle from oils product build-up chlorine environmental impurities to fill with The Best Keratin, GK Hair Non Sulfate Moisturizing Shampoo & Conditioners Infused with Juvexin (A keratin anti-aging protein) that provides superior protection moisture a lasting shine.