NATPAT Sunny Patch UV Detection Stickers Sunburn Prevention for Kids and Adults - Natural Waterproof Patches, Changes Color When Time To Reapply Your SunScreen - BuzzPatch (24 Pack)

Worked perfectly on a long sunny day. Changes color when it's time to re-apply sunscreen.

From my little ones to the grandparents, everyone used a patch. It’s simple and effective no matter your age, which makes it super convenient.

Didn't work well for me. I'm an adult and I wore this to the beach to help me keep an eye on reapplying sunscreen while at the beach. It remained purple the entire time. I even put a dollop of mineral sunscreen directly on the sticker -- lighter purple, but never clear. The patch didn't stay on well either.

I got this brand since I've been seeing so much about the mosquito stickers being so awesome. I took them on a cruise. The first time I used them, it started coming off quickly. I WAS sweating a lot so I thought maybe that was the reason and maybe I didn't stick it down good enough before applying sunscreen. Okay. User error I thought. But it also barely started changing color, and when I would press on it to keep it stuck on, it would change back completely clear. I tried another one the next day and made sure I stuck it on really well. I even moved it to another part of my body just in case. The same thing happened. I ended up just taking it off an hour or so into the day because it was annoying. Would give zero stars if I could. Would return, but I guess that's unethical since it's opened.

From morning errands to an afternoon swim, it lasted without peeling. Great way to make sure I’m keeping my skin protected from UV rays.

I can't say that I will purchase these again. BUT! they did serve their purpose. As a parent I wanted to relax on our beach day, and not have to watch the clock to reapply sunscreen. I put one on each of us, myself, my wife and children. I placed them on the shoulder blade where the sun would hit most. They are easy to apply as long as you don't stretch them peeling them off the plastic sheet. I applied sunscreen right over them. No one went home burned! But I did have to put a second one on both my children. The salt water made them almost dissolve and fall apart.

Used these during an all-day hike. Waterproof and sweat-proof—they stayed on my skin the entire time and worked just as promised.

I tried this a couple times to make sure I wasn’t doing it wrong. As soon as I put the UV patch on it lit up purple. I’m guessing it only tells you how high the UV is instead of when to reapply but I got it so I would know when to reapply sunscreen