Each skin type has its own natural protection time, without the appropriate sunscreen you should not stay in the sun longer than your natural protection time. People with extremely sensitive skin can also react more to the sun. Using a cream with sun protection factor (SPF) prolongs the time you can stay in the sun reducing the risk of getting sunburn.
UVA rays are long length rays which penetrate deep into skin. The results can be:
• Loss of tightness of the skin caused by damage to the elastin and collagen fibres, which make skin supple and firm.
• Development of free radicals.
• Permanent harm to DNA.
Result: Premature skin ageing and wrinkles.
UVB rays reach their peak in intensity from 11am - 3pm in summer. These are middle length rays which penetrate the top layer of the skin, this triggers the production of melanin. The results can be:
• Damage to the DNA at the heart of the skin cell, one of the foremost causes of skin cancer.