Sunscreen

Yes, consistent use of sunscreen can prevent and reduce dark spots by blocking UV rays that trigger hyperpigmentation.

Use sunscreen daily, even on cloudy days, and reapply every 2 hours if outdoors or after swimming or sweating.

Physical sunscreen (zinc oxide, titanium dioxide) reflects UV rays, while chemical sunscreen (avobenzone, octinoxate) absorbs and neutralizes them.

Yes, opt for mineral-based (physical) sunscreens with zinc oxide or titanium dioxide, which are gentler and less likely to irritate.

This is common with physical sunscreens due to zinc or titanium. Look for tinted formulas or blend well to minimize it.

Pick gel or lightweight formulas for oily skin, creamy ones for dry skin, and non-comedogenic options for acne-prone skin. Check SPF and PA ratings.

Yes, sunscreen typically expires 2-3 years from manufacture. Check the date on the packaging and discard if past due or if texture changes.

Yes, UV rays can penetrate windows, and blue light from screens may affect skin, so apply a light SPF indoors for extra protection.