Trick or Treat: Hot Lava Shell Massage

How does it work? A sachet containing minerals, sea kelp and algae is placed in each shell then a saline solution added. The chemical reaction that follows raises the temperature, and in turn heats up the shells. They are then sealed, so the contents don't come out.

With a handful of shells ready to go, Karrie began the massage, first working on my front then back. The first bit included an abdominal massage which I'd never had before and was surprised at how relaxing it was. The technique is particularly good if you're suffering from constipation, as the strokes and pressure encourage things to get moving (though not immediately). The ridged shells also allow the therapist to provide a thorough massage and get into areas more deeply than other techniques.

Don't worry if you hear some rather comical flatulence sounds; this isn't a result of the abdominal massage but hot air escaping from the shell through the seal.

Strip off or cover up? Since this is a thorough, full-body massage, you will need to strip down to your pants.

Does it work? Initially the shells felt too hot but once I got used to the temperature I found the whole process very soothing. Karrie was careful not to use too much pressure but I was keen for her to shift those pesky tension knots. In fact, this was one of the best massages I have had in a long time.

Who's it for? Described as "the world's first portable self-heating massage tool", this has been touted as better than hot stone therapy (where the stones are heated in a cabinet). I'm not sure if it's better but it's definitely worth trying.

How much does it cost? 25 for 30 minutes and 50 for an hour.

Mary Reid Spa Academy, 43 North Castle Street, Edinburgh (0131-225 2087, www.maryreidspaacademy.com)

This article was first published in Scotland on Sunday, January 17, 2010