SPFväärtusele
SPFväärtusele, often abbreviated as SPF, refers to the Sun Protection Factor. It is a measure of how well a sunscreen or other product protects the skin from ultraviolet B (UVB) radiation. The SPF number indicates how much longer it would take for skin to redden or burn compared to when no protection is used. For example, an SPF 15 sunscreen theoretically allows you to stay in the sun 15 times longer without burning than you could without any protection.
It is important to understand that SPFväärtusele primarily measures protection against UVB rays, which are the
Higher SPF numbers offer greater protection, but the increase in protection is not linear. For instance, SPF