How should I store the bottle and how long does it last after opening?

The formula relies on unsaturated plant oils — wheat germ, walnut, cedar seed, and olive oil — which are prone to oxidation over time, especially when exposed to heat, air, and light. Oxidized oils can develop a rancid smell and lose their emollient benefits.

Store the bottle upright in a cupboard or drawer at normal room temperature (15–25°C). Avoid the bathroom windowsill, radiator shelf, or any spot with direct sunlight. After each use, wipe the nozzle clean and screw the cap on firmly to minimize air contact.

The period-after-opening symbol on the packaging indicates 12 months. If the oil develops a sharp, crayon-like, or old-nut smell, or if the color darkens noticeably, discard it — these are signs the lipids have oxidized. Unopened, the shelf life is typically 30 months from manufacture when stored correctly. The 100 ml size is designed to be used up within the PAO window with weekly application.