The only Kohler Waters spa outside the US will reopen in St Andrews, Scotland, early next year, following a multi-million-pound renovation.

The spa retreat will be open to the public for the first time and will have a focus on hydrotherapy.

The renovation, designed by Sedley Place, includes an extension which takes the facility to 25,000sq ft (1,860 sq m).

The spa will be separated into two distinct areas: one dedicated to the spa journey, and the other to leisure and fitness.

The spa will have 13 treatment rooms, including two couples’ rooms and two wet treatment rooms that offer Kohler bathing experiences.

Signature treatments will feature natural, marine-based ingredients, including seaweed and peat from Voya and Phytomer, as well as rituals, Himalayan salts and aromatherapy from Comfort Zone.

A ‘custom time’ menu will create personalised treatment programmes, and nail brand Margaret Dabbs will offer manicures and pedicures.

The new Kohler Waters spa will focus on the origin of the word ‘spa’ – ‘salus per aquum’ or ‘health through water’ – with a hydrotherapy pool, cold plunge pool, ice fountain and experience showers featuring Kohler Real Rain.

There will also be a steamroom, Finnish sauna and a rooftop garden with hot tub.

The renovation will see the addition of a 20m (66ft) lap pool as part of the health and fitness centre, as well as a gym area with cardio and resistance stations, a functional fitness space and a group exercise studio with instructor-led classes and virtual training.

The five-star hotel features 144 bedrooms designed by French designer Jacques Garcia, which have also undergone a complete renovation recently.

The hotel named Kirsty MacCormick as spa director in September.