Sun Screen and sunbathing

Going outside at 11 o’clock? Have you worn sunscreen?

Octyl salicylate

Octyl salicylate is an organic compound used as an ingredient in sunscreens and cosmetics to absorb UVB (ultraviolet) rays from the sun. It is a colourless oily liquid with a slight floral odour. The salicylate portion of the molecule absorbs ultraviolet light, protecting skin from the harmful effects of exposure to sunlight. The ethylhexanol portion is a fatty alcohol, adding emollient and oil-like (water resistant) properties.

Structure of Octyl salicylate
Structure of Octyl salicylate

Ensulizole

Ensulizole is primarily a UVB protecting agent providing only minimal UVA protection. The scope of UVB is 290 to 340 nanometres, whereas the UVA range is 320 to 400 nanometres. For better UVA protection, it must be paired with avobenzone, titanium dioxide, or zinc oxide; outside of the United States it can also be paired with a UV absorber of the Tinosorb or Mexoryl types. Since ensulizole is water-soluble, it has the characteristic of feeling lighter on skin. As such, it is often used in sunscreen lotions or moisturizers whose aesthetic goal is a non-greasy finish. The free acid is poorly soluble in water, so it is only used as its soluble salts.

Structure of Ensulizole
Structure of Ensulizole

Oxybenzone

Oxybenzone is an organic compound. It is a pale-yellow solid that is readily soluble in most organic solvents. Oxybenzone belongs to the class of aromatic ketones known as benzophenones. It is a naturally occurring chemical found in various flowering plants as well as being an organic component of many sunscreen lotions. It is also in widespread use in things like plastics, toys, furniture finishes and more to limit UV degradation.

Structure of Oxybenzone
Structure of Oxybenzone

Sulisobenzone

Sulisobenzone is an ingredient in some sunscreens which protects the skin from damage by UVB and UVA ultraviolet light.

Structure of Sulisobenzone
Structure of Sulisobenzone