One very, very important skincare product you should keep in your arsenal is a high-quality SPF.
SPF products protect your skin against the sun’s UVA and UVB rays. They can help to delay or improve the appearance of signs of ageing, like fine lines, wrinkles, and hyperpigmentation.
Look for a broad spectrum SPF, which protects against both UVA and UVB rays. Also, it’s best to understand what the numbers on the bottle mean. You’ll know the factor (for example, 15, 30, or 50). Use 30 or higher every day, even if it’s not sunny outside.
It’s easy just to look at the factor, but you should also check out the PA rating if provided – this is the UVA cover specifically. They range from PA+ to PA++++, with PA++++ providing the most UVA protection.