Areas of darker pigmentation appear on skin that has been damaged over the years by ultraviolet radiation exposure. This makes the face, hands, arms, legs and shoulders most susceptible. These dark spots, otherwise known as solar lentigines, liver spots, sun spots and age spots, are a typical part of the skin's aging process. The only way to avoid developing these dark spots is to actively protect your face from ultraviolet radiation exposure over the course of your life.
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Put on a wide-brimmed hat when you go outside during daylight hours. Choose a hat that wraps all the way around so that it shades the back of your neck in addition to your face. Or wear one with only a brim in the front for some protection.
Wear large sunglasses that filter out ultraviolet radiation while outdoors during the daytime to protect the think skin around the eyes.
Apply a generous layer of sunblock to your face 20 to 30 minutes before going out during the day. Choose a product with an SPF of 15 or greater and broad-spectrum protection against UVA and UVB rays.
Re-apply sunblock every two hours and after swimming or sweating. Do so regardless of how long the product claims to provide protection and even if it is labeled waterproof or water-resistant.
Put up a beach umbrella to shield your face when at the beach or sitting outdoors for an extended period of time.