NSI Gel Polish System

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NSI was founded in 1987 by Fred Slack and his son Rick Slack, who chose to brand their existing successful compositions. However, the history of NSI in the nail industry dates back to 1957, not 1987. Now, the NSI Gel Polish System has a large selection of items to choose from.


Nail tech pros and customers have trusted the NSI brand for many years, from a broad gel polish assortment through top and base (gloss or matte) coats to beginner kits. The NSI Gel Polish method uses a UV/LED lamp to cure the polish, and it can last for up to two weeks without chipping or damage.


Nation: USA

Founded: 1957

Founder: Fred Slack

Website: nsinails.com

NSI was founded in 1987 by Fred Slack. Photo: yelp.com
NSI was founded in 1987 by Fred Slack. Photo: yelp.com
Nail tech pros and customers have trusted the NSI brand for many years. Photo: ezgels.com
Nail tech pros and customers have trusted the NSI brand for many years. Photo: ezgels.com

Objective Completely Accurate

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