The GK Hair “The Best” Keratin Treatment is a professional-level smoothing treatment enriched with Juvexin that works to straighten and polish hair while restoring it from the inside out. This formaldehyde-free formula deeply nourishes dry and rough hair strands, repairs environmental damage, and helps retain natural hair moisture and shine. It reduces frizz, adds shine, and improves manageability, with results typically lasting 3-5 months.