Glossary

UVA / UVB

Two types of ultraviolet rays from the sun. UVB is mainly responsible for sunburn, while UVA reaches deeper and is responsible for photoageing and pigmentation; both increase the risk of skin cancer.

Articles that mention this term

Start With a ConcernDark Spots and Melasma: Causes, When to See a Physician and What Treatments Are AvailableWhat sun spots, melasma and post-inflammatory spots are, when to see a physician, why sun protection is essential and what treatments are available.Reviewed by the Medical Aesthetics Expert Board

Full glossary

This content is for information only and does not replace an examination or medical assessment. Ask your physician about your own situation.

This section contains no advertising, sponsored content or prices. Editorial Principles