Sunscreen is tested at 2 mg/cm²; typical foundation use is a small fraction of that.
Dermatologists say SPF makeup is a bonus layer, not a replacement for dedicated sunscreen.
Questions we get a lot
Does the SPF in my makeup provide enough protection?
Usually not. To reach a foundation's labeled SPF you'd need to apply far more than anyone does — roughly 5–10 times a normal makeup amount. Treat SPF in makeup as a bonus, not a substitute: apply a dedicated broad-spectrum sunscreen underneath.
How do I reapply sunscreen over makeup?
Use a powder or spray SPF, or a cushion/stick sunscreen, pressed (not rubbed) over makeup about every two hours of sun exposure. These touch-ups are imperfect, so the layer underneath should be a proper sunscreen applied generously in the morning.
Is tinted sunscreen better than foundation with SPF?
Generally yes. Tinted sunscreen is formulated as sunscreen first, so applied properly it delivers reliable broad-spectrum protection plus iron oxides that help shield against visible light. Foundation with SPF is rarely applied thickly enough to reach its labeled protection.
r/SkincareAddiction: 'How do I reapply sunscreen over a full face of makeup?'
