The chromotherapy accessory completes the infrared sauna with the spectacular and relaxing ambience coloured by the light coming from many small bright spots in the cabin sky. Chromotherapy is fundamental in alternative medicine treatments, correlating each colour to a particular psychophysical state. Blue, as the colour of the sea and sky, has a refreshing and calming effect and relieves stress. Green is the colour of nature and harmony, a symbol of hope and peace, it is a fundamental part of relaxation. Red is ambivalent and can have a positive or negative value, symbol of love and fire, it represents strength, virility, joy and sunshine. Orange is a symbol of energy, serenity, enthusiasm, optimism and positivity. Yellow is associated with the left hemisphere of the brain and stimulates concentration, it is a symbol of intellect, wisdom, imagination and imagination.