Quick Answer (TL;DR)
If you're using any exfoliating product (rejuv sets, peeling creams, AHAs, BHAs, retinoids), your skin is more vulnerable to UV damage:
- Exfoliation removes the outer layer of skin, reducing natural protection
- UV exposure on exfoliated skin = increased risk of sunburn, hyperpigmentation, dark spots
- All that peeling can backfire if sun damage undoes your progress
The rule
Daily sunscreen (SPF 30+ broad-spectrum) is mandatory when using exfoliating products. This is not optional [1].
- Apply every morning (even if cloudy, even if indoors near windows)
- Reapply if going outdoors for extended periods
- Choose a formula you'll actually use (texture matters)