The Toppik Hair Building Fibers in Medium Brown or Dark Brown, 27.5g, are designed for thin hair, providing a natural and organic solution to help thicken and volumize. Made with keratin as the active ingredient, these building fibers come in a convenient spray or powder formulation. The product is alcohol-free, cruelty-free, and does not contain any formaldehyde or ammonia, making it a safe and gentle option for hair care. Perfect for those looking to improve the appearance of their thinning hair without the harsh chemicals often found in traditional hair loss treatments
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