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We would not recommend using fragrance alongside sun filters.

If a person normally gets sunburn in 5 minutes from UVB exposure, a properly applied SPF 30 product would prevent them from burning for 150 minutes, whereas a properly applied SPF 50 product would prevent them from burning for 250 minutes.

The ISO 24444:2019 test for determining the SPF value of a product involves applying 2 mg per cm2 of the test product to the skin. In general, consumers tend not to apply the correct amount of product when using make up and moisturisers with SPF protection.

Broad spectrum protection means that the product is proven to provide protection to both UVA & UVB radiation. This is indicated on pack in the UK and EU by displaying the UVA logo. To achieve UVA logo status, the product must offer at least one-third of the SPF protection factor in the UVA spectrum: e.g. a product with SPF 30 protection must provide at least SPF 10 protection in the UVA wavelength spectrum.

Chemical sunscreens work by absorbing the energy of UV radiation into the electron orbitals of their molecular structure and emitting a small amount of heat energy .Mineral sunscreens act as physical barriers to prevent UV radiation from hitting the skin.

UVA (Ultraviolet A) is a long wavelength ultraviolet radiation (320 - 400 nm) and is associated with photoaging of the skin. UVB (Ultraviolet B) is a short wavelength ultraviolet radiation (260 - 320 nm) and is associated with skin burning.

SPF stands for Sun Protection Factor. The number refers to how much protection from sunburn (erythema) you are getting from the sunscreen when exposed to UVB ultraviolet radiation. As an example, if a person normally gets sunburn in 5 minutes from UVB exposure, a sun protection product that stops them from burning for 75 minutes ( 15 times longer) would be classified as SPF 15.