[Complimentary with every 2 Invisible Sunscreens or purchase for $8] - item automatically added to cart for the complimentary unit, while stocks last.
Never Miss Re-applying Your Sunscreen Again.
This 12-piece sticker pack mimics natural skin's rate of absorbing and releasing sunscreen. It turns purple when exposed to UV light and turns clear when there is sufficient SPF coverage.
The intensity of colour change also indicates the level of UV exposure. The more saturated and deeper the purple, the more UV exposure there is. For reapplication of sunscreen, apply sunscreen over the sticker and the area you wish to apply till the UV sticker turns clear again.
This colour change is reversible and the UV Detection sticker may be re-used until it no longer adheres to skin.
Perfect for outdoor activities and kids.
1. Place the UV Detection Sticker on dry skin, preferably on an area that will come into contact with sunlight.
2. Apply sunscreen, including over the sticker. The sticker should be/remain colorless if enough sunscreen is applied.
3. When the sticker changes from clear to purple, it means the sunscreen has worn off and it is time to reapply.
Recommendation: To activate the UV sticker, expose it to UV before applying sunscreen. After applying sunscreen and the sticker doesn't turn clear. It suggests that your sunscreen isn't giving enough protection from UVB. It could also mean that you did not apply enough sunscreen.