Gavin Hefferon, founder of Poseidon Hair: ‘Every day, lads were asking how to get more volume and movement in their hair’In 2019, Gavin Hefferon was a transition year student at St Andrew’s College in Dublin. Six years later, that sea salt spray remains the biggest-selling product in his company’s Poseidon Hair range. As a young teenager, Hefferon developed a strong interest in hair styling and video creation, and it was only a matter of time before the two came together. “I quickly discovered I was better at sales than studying,” says Hefferon, whose business turned over €272,000 last year. Pending a funding round of €150,000, Hefferon plans to hire a chief marketing officer while also increasing production and broadening the company’s sales channels.

Source: The Irish Times December 17, 2025 16:55 UTC