These guidelines are those published by Gastrolux

Thoroughly wash your Gastrolux product using hot water and washing-up liquid, then dry well.

Heat the pan up and lightly coat the interior surface with a small amount of cooking oil.

Always heat the pan before adding food to be cooked.

Handles tolerate temperatures up to 240 degrees centigrade (Removable handles are not oven proof and must be removed).

For cleaning, use warm water and washing-up liquid.

Burnt on fats reduce the non stick effect and should be removed immediately

Remember too that:

The clear lids allow you to view your food as it is cooking. They also have a steam release knob - just turn the knob when necessary. Steaming food preserves vitamins and reduces energy consumption, too.