How much sunscreen to use and when to reapply

Sunscreen only works if you use enough and reapply when you are outdoors. A pea-size smear on the face is usually far below the amount used in SPF testing.

Steps

1. Finish cleanse and moisturiser (if you use them). SPF is last before makeup.
2. Squeeze about two finger-lengths of lotion/fluid for face and neck (common public teaching aid; cover evenly, don’t miss ears and hairline).
3. Spread a thin even layer. Wait 1–2 minutes before makeup so it sets.
4. If you stay outdoors, reapply about every 2 hours. After heavy sweat or towel-drying, reapply sooner.
5. If you blot oil often, you may remove product — plan a top-up (fresh thin layer or stick/powder designed for reapplication).

Side effects / what you might feel

• Common: slight white cast (especially mineral filters), mild greasiness, or pilling if layered too fast on rich cream.
• Common: sting on broken skin or right after harsh acids — pause actives and simplify.
• Stop and wash off: spreading rash, hives, swelling (especially around eyes), or burning that gets worse.

Tips

• Indian outdoor days: shade and clothing still matter — SPF is not a force field.
• If cream SPF feels heavy in humidity, try a fluid or gel-cream — same amount rules apply.