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Welcome to F.A.S.T.

Maximum length, minimum time.
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Welcome to F.A.S.T.

Maximum length, minimum time.
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Welcome to F.A.S.T.

Maximum length, minimum time.
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A revolution in hair growth technology by haircare expert Carolyn Aronson.

From the salon chair, to the laboratory — you know and trust Carolyn Aronson as the founder of It's A 10 Haircare. With a mission to cut hair growth time in half, Carolyn's vision for the haircare industry is propelling F.A.S.T. to achieving results never before seen in the industry.

Paraben & Sulfate Free

Gluten Free

Color-Safe

Leaping Bunny Certified

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MAXIMUM LENGTH, MINIMUM TIME.

Welcome to a new era in hair growth technology.

Introducing the New Era of F.A.S.T. – Powered by It’s a 10® Haircare

We’re thrilled to announce the next chapter for Nisim®, the globally recognized haircare brand with over 30 years of clinically-backed innovation. Now under the visionary leadership of Carolyn Aronson, Founder and CEO of It’s a 10® Haircare, and Jeff Aronson, President of It’s a 10®, Nisim® is poised for a bold reintroduction to the world.

At the heart of this relaunch are two powerhouse lines: F.A.S.T. and Arise—each backed by science and reimagined for today’s hair growth needs.

F.A.S.T. (Fortified Amino Scalp Therapy) is unlike anything else on the market. Powered by a proprietary blend of amino acids, vitamins, and herbal extracts, it’s clinically proven to accelerate hair growth like never before. Our advanced micro-emulsion technology ensures deep penetration of key nutrients—clinically proven to help grow your hair 99% faster!

“This is the first brand I’ve found with truly differentiated products and clinical results to back them up,” says Carolyn Aronson. “Nisim® is the future of performance-driven haircare.”

Get ready for a complete brand transformation—new packaging, fresh imagery, and groundbreaking formulations designed to disrupt the hair growth category.