What is the difference between 30 times and 50 times sun protection?

Sunscreen is a must, otherwise you will go out with white skin and come back with dark skin. So what do 30 times and 50 times sunscreen mean? What is the difference between SPF 30 and 50?

What does 30 times and 50 times sun protection mean?

30 times and 50 times sun protection generally refers to the sun protection index of sunscreen, and the sun protection index is a detection index that measures the defense ability of sunscreen against ultraviolet UVB in sunlight, indicating the sun protection effectiveness of sunscreen products. Assuming that without applying sunscreen, the skin starts to turn red after 10 minutes of sun exposure, a product with an SPF of 50 can protect your skin for 500 minutes, while a product with an SPF of 30 can protect your skin for 300 minutes.

The difference between 30 times and 50 times sun protection

1. Texture

Among products of the same brand and the same formula, SPF30 products are lighter and more breathable than SPF50 products. This is because the higher the SPF value, the more sunscreen is added and the worse the permeability, which will hinder the normal secretion and breathing of the skin. If you have acne-prone or sensitive skin, it is recommended to use a sunscreen with a lower SPF.

2. Security

SPF30 products are safer than SPF50 products because the higher the SPF value, the more chemical sunscreen is added, and this type of sunscreen is corrosive. The more added, the more corrosive it is. Too much sunscreen can easily penetrate into the skin and cause allergies and other problems.

3. Durability of sun protection

SPF50 sunscreen products are more lasting than SPF30 because SPF30 products can extend the protection time by 30 times, while SPF50 products can extend the protection time by 50 times. Of course, the durability of a sunscreen is not only determined by SPF, the PA value is also very important. However, generally speaking, sunscreens with a higher SPF index also have a higher PA value.

4. Suitable places

SPF30 products have a slightly weaker sun protection ability, but are safer, and are suitable for use when you often need to run around outside or travel; SPF50 products have a stronger sun protection ability, but are slightly less safe, and are suitable for use at beaches or when traveling to tropical areas.

This is the introduction to the meaning of 30 times and 50 times sun protection. Now you know the difference!