Traditionally, higher numbers are better in life – like school marks or cricket scores. So although you reach for the SPF 50, you might still get the urge to reach for an SPF 100. After all, if SPF 50 is good, shouldn’t SPF 100 be better?

Not exactly.

Unfortunately for us, the SPF scale is not linear. Meaning, higher numbers do not automatically mean more protection.

For example, SPF 100 is not actually twice as strong as SPF 50. In fact, anything above SPF 30 provides very little additional protection.

• SPF 15 blocks 93% of UVB rays
• SPF 30 blocks 96.7% of UVB rays
• SPF 50 blocks 98% of UVB rays

Our founder, Dr Vanessa Lapiner, explains that provided you are applying your sunscreen thickly enough (1 teaspoon for the face and neck), even an SPF30 is adequate. If you are not being pedantic about the volume applied – rather stick to an SPF50.

SHOP our 3D Defense SPF50 Mineral Sunscreen here and discover why this gloriously hydrating sunscreen reinforced with healing antioxidants make serious, long-lasting, environmentally-friendly protection from the sun’s damaging rays an indulgent no-brainer ritual.