Sun Safety Tips and Sun Protection Methods from Dr Rashidy

Blog by Dr Rashidy, Cosmeticine

Sun protection methods

There are a number of ways to protect your skin from the sun. These include applying sunscreen creams, wearing clothing that protects you from the sun, choosing to sit in the shade instead of direct sunlight where possible and avoiding sun exposure during peak sunshine hours (approx. 10am to 4pm in England in the summer).

Sun protection factor (SPF) ratings

Sun protection factor (SPF) ratings are related primarily to UVB protection as UVB is the primary cause of sunburn. The higher the SPF number, the better the expected protection. Here is a general guide on the protection levels of each SPF:

• An SPF 15 sunscreen provides about 94% protection against UVB.
• Protection against UVB is increased to 97% with SPF 30.
• Sun protection increases to 98% if you opt for SPF 50+.

Applying sun cream

Here are a few things to consider when applying sunscreen:

• For an average-sized adult — requirements may vary depending on body habitus and clothing – a recommendation would be to apply:
  – 4 teaspoons for the limbs (1 for each arm and each leg).
  – 1 teaspoon each for the front and back of the trunk/torso.
  – 1 teaspoon for the head (face, ears, and neck).
• Sun cream should be applied at least 20–30 minutes before sun exposure.
• You should reapply sun cream every 2 hours in the setting of ongoing sun exposure.
• Reapply after swimming, heavy sweating, or if it has been partially rubbed off (e.g. by towel use).
• When using insect repellent, it may reduce the SPF of sunscreen. Therefore, apply a sunscreen with a higher SPF and reapply it more frequently.

Common side effects of sun creams

– Transient stinging following application
– Skin irritation
– Rash (usually a skin inflammation after contact)