How long can you stay in the bath before you turn into a prune?

The time it takes for your skin to start wrinkling, or "turning into a prune," varies by individual but generally occurs after about 10 to 30 minutes of soaking in water. This wrinkling is caused by the outer layer of skin absorbing water and swelling, which reduces the skin's surface area. Staying in water for longer periods can lead to more pronounced wrinkling, but it's typically not harmful unless the skin is exposed to water for excessively long durations.