Petrichor sits inside a hundred-year-old Queenslander on Orchard Street, though the interior is pure Scandinavia, all clean lines and quiet. It was founded by a nurse and midwife who wanted skin treatments that took inner health as seriously as the outer kind. The products are Esse, the South African line built on botanicals, clays and probiotics, all organic and vegan. The menu runs past facials into body work, meditation and yoga. This is a spa with a point of view. It is not selling you a quick fix and it will tell you as much. Book the anti-ageing facial. Then do nothing for an hour.