![EverythingMattersCel](/data/avatars/l/6/6325.jpg?1644583414)
EverythingMattersCel
that bitch
- Joined
- Apr 11, 2020
- Posts
- 9,524
- Reputation
- 20,241
Does anyone here abide by the rule of reapplying sunscreen every 2-3hrs? It seems a little excessive but I am concerned about photoaging from the increased sun sensitivity that comes with using Tretinoin. On a sunny day when you are exposed for many hours at a high UV index, would it be safe to only apply 50 SPF once before going out?