What is systemic photoprotection?

Photoprotection is the biochemical process that helps us deal with skin damage caused by sunlight. This can be achieved not only by the use of UV blockers, such as sun cream but also by oral supplements and medication. The term systemic photoprotection consists of a range of sun-protective agents that act inside our body to provide protection from the sun on the entire skin surface. There are various types which include:

• Beta carotene: this is a nutritional supplement for people with a sun intolerance or can be used as a preventive measure in people with very pale, white skin. It prepares the skin for sun exposure, producing an increase in pigments to reduce the rapid appearance of erythema (redness of the skin). These supplements are not effective in preventing skin cancer.
• Vitamins C, D and A
• Green tea polyphenols: There are various studies with evidence suggesting that the polyphenols in green tea can provide protection from UV sunburns. This can be taken both orally and topically.
• Anti-malarials and polypodium leucotomos (PL): these have been shown to protect cellular DNA. Oral and topical administration of PL has antioxidant, anti-inflammatory, immunoprotective and photoprotective properties.

How is it taken?

These supplements, or medications, can be administered orally, either in the form of capsules, solutions or tablets. Some, such as green tea polyphenols, are also available as topical creams.

Preparation

There is no specific preparation for this treatment. Alternatives to this are the usual topical sun creams or sun blockers.