How long once you stop breathing will your lips turn blue?

Lips can start to turn blue within a few minutes after breathing stops due to a lack of oxygen in the blood, a condition known as cyanosis. The exact timing can vary depending on individual factors such as overall health, temperature, and physical condition. Generally, noticeable changes in skin color can occur within 3 to 5 minutes of oxygen deprivation. However, severe hypoxia can lead to other symptoms much sooner.