SUNSCREEN TYPES AND SPF VALUES

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SUNSCREEN :
Sunscreen also known as sunblock is a lotion, gel, spray, stick or any product that absorbs or reflects some of sun's UV radiations & help us to protect ourselves from skin damages.

WHAT IS SPF ?
SPF is Sun Protection Factor. It a measure of how well the sunscreen will protect skin from UV rays which cause skin damage, sunburn & cal also contribute to skin cancer.

DOES SPF 50 DOUBLE THE ACTION OF SPF 25 ?
The difference between SPF 50 & SPF 25 is 2%. The UV blockage does not increase in proportion to the SPF value but when the SPF value is higher the blocking effect is higher.

TYPES OF SUNSCREEN :

1. CHEMICAL SUNSCREEN -
This type is absorbing. It absorbs the UV rays & then neutralizes them releasing heat. It requires 15-20 minutes to start it's work. It appears black on UV camera as it absorbs light. It feels hydrating & transparent on skin.


2. PHYSICAL SUNSCREEN -
This type is reflecting. It reflects rays away from the skin, it is lika a barrier or shield over your skin. It works immediately after application. But it feels thick & leaves a white cast & tone up effect. It appears white on UV camera as it reflects light.


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