Nishman Hair Building Keratin Fiber 2 in 1 Dark BrownNishman Hair Building Keratin Fiber 2 in 1 Dark Brown is an advanced hair thickening solution designed to instantly transform thin or sparse hair into a fuller, more voluminous look. Formulated with natural keratin fibersthe same protein found in human hairthis product seamlessly bonds to existing strands, creating a (natural) and undetectable finish. The 2 in 1 system combines hair fibers with a fixing spray, ensuring long lasting hold and