Where does sunscreen go? Last. Every morning.
The least glamorous step is the one doing most of the work.
Why last matters
Modern sunscreens work by forming a uniform protective film. Rubbing a moisturizer over that film disrupts it, and thin patches in sunscreen are invisible until they show up later as sun damage. Moisturizer first, let it settle for a minute, then sunscreen as the closing layer.
How much is enough
More than feels natural: about a quarter teaspoon for the face, more if you include ears and neck (include ears and neck). Most people apply half the tested amount and unknowingly get a fraction of the labeled protection. If using enough feels heavy, the fix is a sunscreen whose texture you like, not less sunscreen.
Reapplication, honestly
The two-hours-in-sun rule is real, and so is real life. The practical version: a full morning application without fail, and reapplication on days with actual outdoor exposure. Powder or stick formats make midday top-ups over makeup possible. An imperfect reapplication habit over a perfect morning base beats both perfectionism and giving up.
Why it is non-negotiable with actives
Retinoids and exfoliating acids leave skin more sun-sensitive for days after use. A routine with strong evening actives and no morning sunscreen is working against itself: the sun undoes by noon what the actives built overnight. If you use any active in this guide library, sunscreen is part of that active's routine.
Common questions
Does makeup with SPF count?
As a bonus layer, yes; as your protection, no. The amount of foundation needed to reach its labeled SPF is far more than anyone wears. Dedicated sunscreen first, SPF makeup as a topper.
Do I need sunscreen indoors or in winter?
Daily consistency wins. UVA passes through window glass and is present year-round, and the habit you keep daily is the one that protects you in July.
Mineral or chemical sunscreen?
The best sunscreen is the one you will actually apply generously every morning. Sensitive and redness-prone skin often prefers mineral filters; texture preference is a legitimate deciding factor.
Selv checks this for you.
A free iPhone app that knows the right order for your routine and warns you when ingredients clash. No account needed, nothing to buy, and without an account nothing leaves your phone.
