The Importance of Sunblock

Sunblock or sunscreen is a cream, gel, ointment, lotion, moisturizer or any product that protects the human skin from the harmful rays of the sun (ultraviolet – UV). Most people only use it during summer or on the beach. This should not be the case, since sunlight is everywhere everyday. The sun can be good for the skin only up to fifteen (15) minutes.

A little exposure helps the body absorb Vitamin D, which is very essential in promoting strong bones and teeth. But, staying under the sun for too long can cause several skin problems, such as sunburn, wrinkles and skin cancer. With the ozone layer quickly depleting, experts warn people to avoid sunny peak times (10am – 3pm). They also encourage everybody to wear sunblock even on normal days. This will shield the skin from the UV radiation.
SPF in Sunblock

Sunblock is classified according to its SPF or sun-protection factor. Its variety is according to the number indicated. SPF types depend on the length of time in which the sunblock remains effective as skin protection. For instance, a sunscreen with SPF45 can last up to eight hours under the sun. But, it need to be reapplied in case of excessive sweating or swimming. To be able to know the SPF effectivity, multiply the SPF with the period of time for a person to get burnt without sunblock. For example, person X usually suffer a sunburn in 5 minutes without protection. If person X applies SPF30, the protection will last for 150 minutes (SPF30 x 5 mins.).
Sunblock Application

Application should always be 30 minutes before sun exposure. Never apply it under the sun, because it will just run off with the sweat. Also, don't forget areas like the lips, nose, eyelids and most of all the ears. Use sunblock sticks for these zones. The T-zone of your face also needs a lot of sticking or protection, as well as those regions where sun rays hit bad (like at the back of your shoulders).