SPF Centre

Sun protection, explained properly.

When it comes to healthy skin, no skincare product has more evidence behind it than sunscreen.

Daily sun protection is one of the most effective ways to help reduce the risk of premature skin ageing, pigmentation and sun damage. In fact, applying sunscreen consistently often has a greater long-term impact than using expensive serums or treatments alone.

This guide explains how sunscreen works, how much to apply and how to choose the right formula for your skin.

What Does SPF Actually Mean?

SPF (Sun Protection Factor) measures how well a sunscreen helps protect your skin from UVB rays—the rays primarily responsible for sunburn.

When applied correctly:

SPF 30 filters approximately 97% of UVB rays.
SPF 50 filters approximately 98% of UVB rays.

Although higher SPF products offer slightly greater protection, the biggest difference comes from applying enough sunscreen and reapplying it regularly.

Understanding UVA & UVB

Sunlight contains different types of ultraviolet (UV) radiation.

UVB

Mainly responsible for sunburn.
Strongest during spring and summer.
Intensity varies throughout the day.

UVA

Penetrates deeper into the skin.
Present all year round.
Can pass through clouds and window glass.
Contributes to premature skin ageing and long-term skin damage.

What Does “Broad-Spectrum” Mean?

A broad-spectrum sunscreen helps protect against both UVA and UVB rays.

When choosing a sunscreen, always look for Broad Spectrum protection.

Chemical vs Mineral Sunscreens

There isn't a universally “better” sunscreen—only the one that's right for your skin and that you'll use consistently.

Chemical (Organic) UV Filters

Examples include:

Avobenzone
Octocrylene
Uvinul A Plus
Uvinul T 150

How they work
These filters absorb UV radiation and convert it into a small amount of heat before it can damage the skin.

Often suitable for

Normal skin
Combination skin
Oily skin
Those who prefer lightweight textures

Things to know
Some people with sensitive skin may find certain chemical filters irritating, although modern formulations are generally well tolerated.

Mineral (Physical) UV Filters

Examples include:

Zinc Oxide
Titanium Dioxide

How they work
Mineral sunscreens form a protective layer on the skin. They primarily scatter and reflect UV radiation, while also absorbing part of it.

Often suitable for

Sensitive skin
Reactive skin
Post-treatment skin

Things to know
Some mineral formulations may leave a visible white cast, particularly on deeper skin tones, although many modern formulas minimise this effect.

How Much Sunscreen Should You Apply?

This is where most people unknowingly reduce their protection.

For the face and neck, most adults need approximately:

Two finger lengths of sunscreen, or
Around ¼ to ½ teaspoon

Applying less than this can significantly reduce the level of protection shown on the bottle.

When Should You Reapply?

Even the best sunscreen doesn't last all day.

Reapply:

Every 2 hours when spending time outdoors.
Immediately after swimming.
After excessive sweating.
After towel drying.

One application in the morning is usually not enough for prolonged outdoor exposure.

Common SPF Myths

“I don't need sunscreen on cloudy days.”
False. Up to 80% of UV rays can pass through cloud cover.

“I work indoors, so sunscreen isn't necessary.”
Not always. UVA rays can pass through window glass, meaning your skin may still be exposed indoors, particularly if you spend long periods near windows.

“Darker skin doesn't need sunscreen.”
Everyone can experience UV damage. Although darker skin tones naturally contain more melanin and have a lower risk of sunburn, they can still develop pigmentation changes, premature skin ageing and skin cancer.

“My makeup contains SPF.”
Makeup alone is rarely enough. Most people don't apply foundation or tinted moisturiser thickly enough to achieve the SPF protection shown on the packaging. A dedicated sunscreen should still be applied underneath.

“Higher SPF means I can use less.”
No. SPF indicates the level of protection—not how long it lasts or how little you can apply. Every sunscreen should be applied generously and reapplied when needed.

Choosing the Right SPF for Your Skin Type

Oily Skin
Look for:

Lightweight lotions
Gel formulas
Oil-free products
Matte finishes

Dry Skin
Choose:

Cream-based sunscreens
Hydrating formulas
Products containing moisturising ingredients

Sensitive Skin
Often best suited to:

Fragrance-free formulations
Mineral sunscreens where appropriate

Acne-Prone Skin
Look for products labelled:

Non-comedogenic
Lightweight
Oil-free where suitable

Not sure which skin type you have? Visit our Understanding Your Skin Type guide.

Where Does SPF Fit in Your Routine?

Sunscreen should always be the last step in your morning skincare routine.

Morning Routine

Cleanser
Antioxidant Serum (Optional)
Moisturiser
Broad-Spectrum SPF

If you use retinoids or exfoliating acids in your evening routine, applying sunscreen the following morning becomes even more important, as these ingredients can increase your skin's sensitivity to sunlight.

A Note on Sun Damage

Consistent sunscreen use is one of the simplest ways to help reduce the appearance of:

Pigmentation
Fine lines
Uneven skin tone
Sun spots
Premature skin ageing

However, sunscreen cannot completely eliminate UV damage.

Where possible, also consider:

Seeking shade during the hottest part of the day.
Wearing protective clothing and a wide-brimmed hat.
Using sunglasses that provide UV protection.

Sun protection works best as a combination of sensible habits—not sunscreen alone.

When Should You Seek Medical Advice?

If you notice a mole or patch of skin that:

Changes in size
Changes in shape
Changes in colour
Bleeds
Becomes itchy or painful

arrange an appointment with your GP promptly for assessment.

Sun Protection Is an Everyday Habit

The best sunscreen is the one you'll apply every day.

Whether you choose a chemical or mineral sunscreen, SPF 30 or SPF 50, the most important factors are:

Applying enough.
Reapplying when needed.
Wearing it consistently throughout the year.

Healthy skin isn't protected by sunscreen occasionally—it's protected by making SPF part of your daily routine.

Continue Your Skin Lab Journey

Disclaimer
The information in the JOVEEN Skin Lab is provided for general educational purposes only and should not be considered medical advice. If you have concerns about your skin, unusual changes to moles or persistent sun damage, please seek advice from your GP or a dermatologist.