As spring approaches and the sun graces us with its presence (occasionally, if you’re in the UK), your skin remains exposed to its effects every day. Despite the common misconception that sunscreen is only necessary on sunny days, SPF is a non-negotiable step in your daily skincare routine—rain or shine.
What is SPF and why does it matter?
SPF (Sun Protection Factor) measures how long the sun’s ultraviolet B (UVB) rays will take to redden the skin when using a product as directed, compared to the time in the sun without it.
The sun emits two types of ultraviolet rays:
UVB Rays – The primary cause of sunburn and a key contributor to skin cancer
UVA Rays – Responsible for skin damage, premature ageing, and tanning
A broad-spectrum sunscreen is essential to protect against both UVB and UVA damage, safeguarding your skin’s health and radiance.
What sunscreen should you wear?
Not all sunscreens are created equal. To ensure optimal protection, choose sunscreens that are:
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SPF 45 or higher – Ensures maximum defence against UVB exposure
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Broad-spectrum coverage – Look for a minimum 4-star UVA rating (on UK and European sunscreens)
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Daily application – Even on overcast days, 80% of UV rays pass through clouds
Physical vs Chemical Sunscreens
Physical (mineral) sunscreens contain active ingredients zinc oxide and titanium dioxide, creating a shield that sits on the surface of the skin, deflecting UV rays. Ideal for sensitive skin, it provides instant protection without the need to wait before going out and offers greater resistance to water. As they act as a shield, they may leave a white cast.
Chemical sunscreens contain chemicals like oxybenzone and octinoxate, which absorb UV rays and convert them into heat before they can damage the skin. These need to be applied 30 minutes before going out to allow time for absorption and tend to be easier to blend in. However, these can cause irritation, making it less suitable for sensitive skin.
How to apply sunscreen correctly?
To maximise the efficacy of your sunscreen, follow these essential steps:
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Apply at least 1 ounce (approx. 2 tablespoons) to cover your face and exposed areas of your body
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Sunscreen should be reapplied every two hours, especially during prolonged sun exposure
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Often-overlooked areas like the eyes, lips, and ears require just as much care
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Pair sunscreen with protective clothing (e.g., wide-brimmed hats and UV protective sunglasses) and seek shade for ultimate sun protection
Sunscreen is more than just a protective measure—it is a commitment to skin longevity. By incorporating a high-quality SPF into your daily routine, you ensure your skin remains protected and radiant for years to come.