Karseell Keratin Collagen Biotin Organic Straightening Treatment delivers professional-grade hair restoration in a 500ml bottle. Infused with keratin, collagen, and biotin, this organic formula penetrates deep into hair strands to repair damage, enhance elasticity, and restore natural shine. Perfect for frizzy, curly, or chemically treated hair, it smooths and straightens while nourishing from root to tip. The lightweight formula works without harsh chemicals, leaving hair silky, manageable, and visibly healthier. Ideal for weekly treatments or intensive care routines. Transform dull, unruly hair into smooth, glossy locks with this multi-action treatment.