The sun has positive effects on the mood, supports vitamin D production in the skin and can improve some skin diseases. However, excessive exposure leads to accelerated skin ageing, can cause specific skin reactions and increases the risk of skin cancer.

Considering acute skin reactions, ultraviolet B (UVB) rays cause mainly sunburn while UVA rays trigger most allergic reactions.

Both types of UV lights cause chronic damages:

Chronic effects of UV rays:

UVB	UVA
Dryness, itch, loss of elasticity, wrinkles, pigmented spots. Risk of benign and malignant tumours.	Accelerated ageing of the skin, loss of elasticity (damage to collagen fibres), pigmented spots, risk of skin cancer, blood vessel damage.

These situations increase UV intensity as a result of reflected rays:

How does the Sun effect your skin? Find out in our Protecting your skin page.

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