Can SPF30 sunscreen be used in summer? What does SPF30 mean?

Is SPF30 sunscreen enough for summer? The summer solstice is approaching, and the sun is getting stronger and stronger. Girls have started to stock up on sunscreen. But is SPF30 sunscreen enough for summer? Let’s take a look at how to choose sunscreen in summer~!

Is SPF30 enough for summer?

SPF30 sunscreen is actually not enough in the summer, because SPF30 means that in the absence of sweating or other external conditions, it can block ultraviolet rays for 15*30=450 minutes, which is equivalent to more than 7 hours. But in fact, SPF30 sunscreen cannot protect the face for such a long time.

Everyone's skin type is different, and the intensity of ultraviolet rays in the area they live in is also different. If you don't use enough sunscreen or don't apply it evenly, and it's easy to sweat in the summer, the sunscreen film will be destroyed and the sun protection ability of the SPF30 sunscreen will be affected. Therefore, simply using SPF30 sunscreen is not enough in summer.

How much SPF sunscreen should I use in summer?

Students and office workers: SPF30 sunscreen (PA++, PA+++)

Outdoor athletes, beachgoers, and travelers: SPF50 sunscreen (PA+++, PA++++)

Note: Even if it is SPF50 sunscreen, it is best to apply it every two or three hours. Because the sun protection ability of sunscreen is greatly affected by external factors. In addition, if you do not use enough sunscreen or apply it unevenly, the sun protection ability indicated by the sun protection index will not be achieved. Therefore, you must reapply it in time when going out.

When choosing sunscreen in summer, you should also consider the PA value

When girls choose sunscreen in summer, they also need to pay attention to the PA value of the sunscreen. No matter how high the SPF value is, it only indicates the blocking of UVB rays. Therefore, you should also pay attention to the PA value, which blocks UVA rays that can penetrate deep into the dermis. The impact of this ultraviolet light on the skin is cumulative and irreversible. It will destroy subcutaneous collagen and damage skin cells, causing skin aging. It can also easily cause skin inflammation and induce melanin formation.

PA value intensity interpretation:

PA+: Delays tanning time by 2 to 4 times.

PA++: Delays tanning time by 4 to 8 times.

PA + + +: Delays tanning time by more than 8 times.