Private equity firm North Castle Partners, which backs beauty and other consumer companies, has closed a new $300 million fund.

The fund, NCP VI, will be used to invest in companies tied to healthy, active and sustainable living.

Beauty is such a core part of health,” said Lou Marinaccio, managing director at North Castle. “It’s obviously taking care of the body’s largest organ — the skin — and providing ways for people to feel better by looking better.”

North Castle’s current investments in the beauty space include Red Door Salon, Mineral Fusion, Palladio and Mario Tricoci. Under North Castle, Red Door has made two add-on acquisitions, Manicube and CityMani. The businesses have also rebranded in July, with a focus on a new omnichannel approach. North Castle also backs Barry’s Bootcamp, Curves and Sprout Organic Foods.

North Castle continues to look at beauty companies and is likely to make at least one beauty investment from the new fund, Marinaccio said.

“We continue to be active in working with our two beauty businesses in Palladio and Mineral Fusion on the cosmetics side and natural personal care, and The Red Door and Mario Tricoci salons and spas, and we are always looking to add to the portfolio,” Marinaccio said. “I would very much hope that we’ll have no less than one additional beauty business if not more in this new fund.”

So far, the fund has already made two investments — HydroMassage, which offers dry hydrotherapy massage systems, and Strengthen, Lengthen and Tone, a fitness studio operator.

“What we’ve seen is that consciousness in consumerism that has driven healthy, active and sustainable living from a niche concept into the mainstream…has absolutely hit beauty,” Marinaccio said. “The role [involves] direct communication with consumers, whether it’s online retail and increasing procurement and selection of beauty products online, and what brands are being built directly with consumers…and what businesses can be built through communication with influencers — how do we think about brands that row up differently than 15 years ago? We’ll be thinking about all those things,” he said.

North Castle invests anywhere between $10 million and $50 million per transaction and in companies that have more than $10 million in net sales.