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Decoding sunscreen labels: Your comprehensive guide to sunscreens

Whatever your skincare goals and skin concerns are, one of the most important things to ensure your skin is well maintained and healthy is wearing sunscreen. Here is a comprehensive guide to sunscreens from UVA, UVB, SPF numbers to PA++. Every question you had about sunscreens, answered!

Korean Sunscreen for Oily Skin in India

UVA/ Ultra Violet A

UVA makes up the majority of the UV light that reaches us. Although both UVA and UVB are bad for the skin, UVA is more of a threat than UVB. UVA is associated with aging and pigmentation, damages our skin’s genes, and is one of the causes of skin cancer. It penetrates deep into the skin layer. Even on a pleasant or a cloudy day, when there is no sun, UVA rays are there. UVA rays even penetrate glass. So your skin is exposed to UVA rays all day, every day.


UVB/ Ultra Violet B

UVB causes sunburn and redness. Although it does not penetrate the skin, it can be damaging to the skin. UVB protection is measured by the sun protection factor (SPF). SPF is a better predictor of protection against UVB.


What is the meaning of SPF?

SPF - Sunscreen Protection Factor

A sunscreen with SPF 50 will protect the skin until it is exposed to 50 times more UVB radiation than what is required to burn the unprotected skin. The SPF indicates a relative amount of time from sunlight or how long you can stay in direct sunlight before the skin starts to burn. It is a bit mathematical, but we've got you!

Number of minutes when your skin starts burning unprotected sun exposure

x

SPF rating of your sunscreen

= How long your sun protection will last


For example, if your skin normally changes color after 10 minutes of unprotected sun exposure, so, with SPF 45,

10 minutes x 45 = 450 minutes = 7.5 hours.

Then sunscreen such as A'pieu Pure Block Natural Daily Sun Cream SPF45 you will get seven and a half hours of sun protection.


What Does the PA+ Sunscreen Symbol Mean?

Persistent Pigment Darkening (PPD)

Protection against UVA radiation is measured by the Persistent Pigment Darkening (PPD) Protection Factor. The technique was developed in Japan and has been routinely used by manufacturers but as helpful as it seems, the clinical significance of PPD is not clear. Sunscreens include PA rating, where letters “PA” is followed by plus signs: PA+, PA++, PA+++, and PA++++. For instance, Rovectin Skin Essentials Aqua Soothing UV Protector SPF50 has PA++++.


PA ratings

  • PA+ 2-4 PPD Little UVA protection

  • PA++ 4-8 PPD Moderate UVA protection

  • PA+++ 8-16 PPD High UVA protection

  • PA++++ > 16 PPD Extreme UVA protection


For example, if your skin normally gets tan after 10 minutes of unprotected sun exposure, so with PA++, it will take 4-8x longer.


10 minutes x (4-8) = 40-80 minutes, with full sun protection.

What is Broad Spectrum Sunscreen?

Broad-Spectrum Protection is used to indicate that the product has been tested to claim that it protects from both UVA as well as UVB damage. Suntique I'm Pure Cica Suncream, a lightweight, broad-spectrum sunscreen formulated with skin soothing Centella Asiatica is one of the best Korean sunscreen for oily skin .


Takeaway

It is recommended to use at least SPF 30, as no sunscreen protect 100% from UV rays. To ensure that your skin is well protected from UVA and UVB, look for sunscreens labelled as broad spectrum. Therefore, applying enough sunscreen and reapplying is just as important to protect skin against sun damage.

What factors do you look at in your sunscreen?

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