@bykristinanguyen: Testing the 2-hour sunscreen rule with @ROUND LAB! Keep in mind, different weather and activities can affect results but for today’s test, the weather was partly cloudy in 4°C Canadian winter!! #roundlab #sunscreen #uvprotection #koreanskincare

kristina nguyen
kristina nguyen
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Region: CA
Friday 06 March 2026 01:29:30 GMT
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auroralaran
helaena :
2h rule is for physical sunscreen. You are using chemical one, you are gonna irritate your skin if you apply every 2 hour.
2026-03-06 10:54:11
1478
sunoochingg1
Sunaurr :
when you reapply sunscreen, did y'all wash your face before applying sunscreen or apply it directly even if you haven't washed your face yet?
2026-03-20 09:05:20
408
helobatatinhas
✧ :
i think the 2h rule really makes sense when going to the beach or pools where it can get removed very easily, but for everyday its more like a "lets sell more" thing
2026-03-06 01:51:23
11760
nt4u__
🤖 :
is reapplying really necessary?
2026-03-06 09:28:20
54
fangruninismygoddess
Fang Runin🧎🏻‍♀️🧎🏻‍♀️ :
Uv cameras don’t show the spf, it just shows how evenly you’ve applied your sunscreen. It could be spf 15 by the time it’s night. Please don’t spread misinformation.
2026-04-12 15:13:08
52
k_lie22
browneyebtwnmycheeks :
I saw a study saying that reapplication isn’t always necessary unless your activities include possibly rubbing/washing off the sunscreen
2026-04-21 17:51:59
41
appleuser68992313
Marta 🌻 :
I think the 2h rule applies mostly when you’re outside in the sun… if you’re inside or in partial shade it’s not needed. Generally I apply it in the morning and before leaving work
2026-03-11 11:38:55
164
childofthegodessathena
Cyra (Lily's version🌸) :
I've read a study the other day about the sunscreens but I can't find it again 😭 It was a canadian study though because it was talking about the cancer rate of Canada. The study said that unless you wanted to go swimming, applying sunscreen just right before going was working and that 2 hours reapplication was not needed unless swimming, sweating or being in contact with exfiolating substance like sand.
2026-05-01 15:15:49
11
chrsityapple123
ChrsityApple123 :
: I only use sunscreen in spring and summer. And not on rainy cool day either. I personally hate sunscreen
2026-03-21 08:24:09
99
alicjagccbczfh
alicja :
How to do this dark camera effect is it an app or do you use any professional tools??
2026-04-06 18:38:44
1
user2548915750601
user2548915750601 :
Can u try it again without makeup?
2026-04-21 11:37:12
0
zushi.crochet
𝙯𝙪𝙨𝙝𝙞 :
please test haru haru wonder next!!!
2026-03-29 21:15:59
2
honeybun.dollie
˚‧꒰ა 𝓖𝓻𝓮𝔂𝓓𝓸𝓵𝓵𝔂 ໒꒱ ‧₊˚ :
can someone tell me a good sunscreen for dry and sensetive skin?
2026-03-29 19:26:50
1
youngkeku_
￴ ￴￴ :
Like my video guys
2026-03-21 10:17:15
0
fazz1let
fa💤ilet :
try with skin 1004 sun serum
2026-03-06 09:11:30
7
xaimi45
xaimi :
nagulat ako sa UV cam 😭😭😭
2026-04-16 14:57:22
0
username9753174
username97531 :
Is it suitable for sensitive skin?
2026-03-12 23:12:31
3
pilar.rivi
pi. :
girl you are sooo pretty !!💗
2026-03-06 02:20:13
1
wonyoungism._1
nar🍂 :
почему с этим эффектом все кажется таким грязным..
2026-05-08 14:50:06
1
novex.b
Babl finger :
Can you test the skin1004 centella suncreen pls
2026-03-29 18:08:32
0
bro41013
Bro :
beautiful ❤️Bruce
2026-05-01 11:18:17
0
thomasjuice90
Thomas :
It is ill clump up microscopically aswell as become a thinner layer, every 2h is optimal but once is the most important
2026-04-21 19:58:20
0
oddinarycherry
🩷꒰𑁬ᥴhᥱrrყ꒷❤︎꒦ちぇりー໒꒱🩷 :
i apply mine every 3-4 hours
2026-03-08 14:38:14
0
maii_yazhi
°ᔕᑌEᗪE & ᔕᗰOKE° :
how much n how often you should reapply depends on the uv index. Just check ur weather app daily to know the uv index. also you can use sunscreen cream thick in the morning n use sticks to reapply over the day
2026-03-22 21:57:34
1
user8962809995594
user8962809995594 :
You don’t get UV in the car lol
2026-04-13 08:06:38
0
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