Do all sunscreens protect equally against UVA and UVB rays?

No, they don’t. SPF only measures UVB protection, while UVA protection is rated separately with PA+ to PA++++ or the Boots star rating. For the best UVA blocking, look for PA++++ or a UVA circle on EU bottles. Don’t rely on “broad spectrum” alone—check the label for a PA rating or UVA symbol.