Without sunscreen, SPOTs™ can change from clear to purple in approximately 30 seconds in direct sunlight! With sunscreen, the reverse change from purple to clear can take up to 1.5 minutes in direct sunlight.
With sunscreen applied to SPOT™, there are many factors that affect the speed of the color change:
- UV index
- Time spent in the sun vs. shade
- Your sunscreen's SPF
- How much sunscreen you applied
- How long you let your sunscreen dry on your skin and SPOT™
- Activities you're doing (swimming, sweating, sunbathing, etc.)
All sunscreens recommend to reapply after swimming or toweling, so expect to see a color change when you get out of the water.