The difference between 50x sunscreen and 30x sunscreen: the higher the SPF value, the better the sun protection effect?

Sunscreen is an essential cosmetic when going out, and the sunscreen index varies to a certain extent, 30 times and 50 times are the two most common ones. So, what is the specific difference between 50x sunscreen and 30x?

The difference between 50x sunscreen and 30x

The most essential difference between 50x sunscreen and 30x sunscreen is the different sun protection indexes and the length of time they block ultraviolet rays. Due to different sun protection factors, there are differences in sun protection time, sun protection effect, suitable places, and safety. Theoretically, SPF 50 can block UV rays slightly longer than SPF 30, and is more effective. However, it is best not to use SPF 50 on a daily basis.

The specific difference between 50x sunscreen and 30x

1. Different security

Among products of the same brand and the same formula, SPF30 products are lighter, more breathable, and safer than SPF50 products. This is because the higher the SPF value, the more sunscreen is added. This type of sunscreen is corrosive, and too much sunscreen can easily penetrate the skin and cause allergies and other problems. For example, SPF15 has a protection rate of 93%, while SPF34 has only a protection rate of 97%. However, the larger the SPF value, the worse its permeability, which will hinder the normal secretion and breathing of the skin.

2. Different sunscreen durability

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.

3. Suitable for different 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.

Misunderstandings about Sun Protection Factor

Myth 1: The higher the SPF value, the better the sun protection effect

The SPF is just a reference number. In reality, it must be considered based on individual skin type, sun exposure reaction, skin tone, activity level and sweating level.

Myth 2: The whole family uses the same sunscreen product

The choice of sunscreen needs to be "personalized", and family members should choose sunscreen according to their own needs.

Myth 3: Expensive sunscreen products are more effective

The effectiveness of sunscreen products in blocking ultraviolet rays depends on the sunscreen ingredients and content they contain, and has no absolute relationship with the price. Expensive sunscreens are not necessarily suitable for everyone. You should choose according to your personal skin type, environment and time.