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Yes — Growthz fibers are made from natural keratin, the same protein your hair is made of. They electrostatically bond to existing strands and are completely undetectable even up close. No shine, no clumping, no artificial look.

Completely. Growthz washes out cleanly with your regular shampoo — no staining, no residue, no damage. It stays on until you wash it, then disappears without a trace.

Absolutely. Growthz is dermatologically tested and free from parabens, sulfates, and harsh chemicals. Thousands of customers use it every single day with no irritation or side effects.

No. Growthz is sweat-resistant and weather-resistant. It holds firm through gym sessions, rain, and humidity. Use the FiberLock Spray Kit for maximum all-day hold in the most active conditions.

We have 3 shades — Black, Dark Brown, and Medium Brown. Choose the shade closest to your natural hair color. If you're between shades, go one shade lighter for a more natural blend. Use our Shade Finder Quiz for a personalised recommendation.

Yes — Growthz works beautifully for women dealing with thinning hair, widening parts, or patchiness. It's one of our most popular uses. Simply apply to the thinning areas and blend with your fingers or a comb.