CND

Professional nail chemistry owes an awkward debt to dentistry, and this company is the clearest case: it was started by a dentist who was also an organic chemist, working on the problem of a resin that refused to yellow.

Dr Stuart Nordstrom's contribution was SolarNail, a polymer system for nail enhancements that held its colour instead of going amber, and in 1979 he built a company in San Diego around it. His daughter, Jan Arnold, joined as co-founder and became style director, the person responsible for turning a materials-science business into a fixture of backstage runway work and trend forecasting.

The defining commercial moment arrived in 2010, after roughly five years of development, in the form of a three-part UV-cured colour system promising two weeks of wear with no drying time. It landed exactly when salons needed a service that justified a higher ticket and clients wanted a manicure that survived a holiday, and it reshaped what a standard salon appointment looked like. Ownership has been less linear than the product story: the company passed to an investment-backed professional-beauty group at the turn of the century and returned to Revlon's portfolio in 2013, when Revlon acquired that group for six hundred and sixty million dollars.

The honest read is that this is a professional-channel brand and the distinction matters more than usual. The gel and enhancement systems are engineered around a specific application and removal protocol, and most of the horror stories attached to long-wear manicures, the thinned plates and white patches and painful lifting, come from removal being rushed or done by scraping rather than from the chemistry itself. Used as designed, by someone trained in it, the systems perform. Bought casually and removed impatiently at a kitchen table, they are one of the more reliable routes to a damaged nail. The brand's education arm is not marketing decoration; it is a fair signal of where the value actually sits.

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