Sunscreen and SPF: How to Protect Your Skin Without Avoiding the Sun

Sun protection should not be about being afraid of the sun. It should be about understanding it.

The sun gives us light, warmth and countless moments we would never want to miss: summer mornings, long lunches outside, walks by the sea, gardening, travelling and days spent with the people we love. At the same time, ultraviolet radiation can affect the skin even when the weather does not feel particularly warm or sunny.

At SKØN SKINCARE, we therefore see sunscreen as an important part of a thoughtful skincare routine. Not as something reserved for beach holidays, but as protection that helps preserve the skin’s comfort, elasticity and more even appearance over time.

The original SKØN sun-protection guide already covers UVA, UVB, SPF, the UV index, application and different sunscreen formats. Below, the subject is expanded with practical advice, common sunscreen myths and a more personal explanation of why the experience of wearing sunscreen matters.

“I absolutely love the sun. I love the warmth, the light and the feeling of being outside. But the sun also demands respect. For me, good sun protection is not about hiding from it—it is about enjoying it while taking sensible precautions. It was therefore essential that our facial SPF 50 should not feel sticky, heavy or as though the skin were trapped underneath it. High protection only truly works in everyday life when the formula feels comfortable enough to use properly.”

Mina Ingerslev, founder of SKØN SKINCARE

Why sunscreen is one of the best investments in your skin

A skincare routine may include carefully selected cleansers, serums, facial oils and moisturisers. These products can support hydration, comfort and the skin barrier—but they cannot replace protection against ultraviolet radiation.

Repeated UV exposure can contribute to visible changes such as uneven pigmentation, loss of elasticity, rougher texture and fine lines. Some effects are visible quickly, while others develop gradually over many years.

This is why sunscreen can be considered one of the most valuable long-term investments in the skin. It does not reverse every sign of ageing or make the skin immune to sunlight. Instead, it helps reduce avoidable exposure while supporting everything else you do for your skin.

Sun protection becomes particularly relevant when the UV index reaches 3 or above. The World Health Organization explains that the higher the UV index, the greater the potential for damage to the skin and eyes—and the less time it may take for that damage to occur.

The SKØN SKINCARE philosophy: protection without fear

At SKØN SKINCARE, we believe skincare should support life—not make it smaller.

We do not believe that healthy sun habits require avoiding every ray of sunlight or feeling guilty when sunscreen is forgotten. Instead, protection should become a natural part of everyday self-care:

• Check the UV index.
• Apply sunscreen generously.
• Reapply when exposure continues.
• Seek shade when the sun is strongest.
• Wear protective clothing when appropriate.
• Enjoy being outdoors with greater awareness.

One forgotten application does not undo your skincare routine. What matters is the habit you build over time.

What are UVA and UVB rays?

UVA and UVB are two forms of ultraviolet radiation from the sun. They affect the skin in different ways, which is why a sunscreen should provide broad-spectrum protection rather than focusing only on the SPF number.

UVA rays

UVA rays have longer wavelengths and can penetrate more deeply into the skin.

They are present throughout daylight hours and are associated with oxidative stress, uneven pigmentation, reduced elasticity and visible premature skin ageing. UVA can also pass through ordinary window glass more readily than UVB, making exposure relevant when driving or sitting for long periods near large windows.

UVB rays

UVB rays have shorter wavelengths and primarily affect the skin’s surface.

They are strongly associated with redness and sunburn. Their intensity varies depending on the season, time of day, altitude and geographical location.

UVB exposure is often strongest around the middle of the day, when the sun is highest in the sky.

The European Commission recommends that sunscreen products offer balanced protection against both UVA and UVB radiation.

What does SPF actually mean?

SPF stands for Sun Protection Factor.

The SPF number primarily describes the level of protection against UVB radiation under controlled testing conditions. It does not mean that SPF 50 allows everyone to stay safely in the sun for exactly 50 times longer.

The protection achieved in everyday life depends on several factors:

• How much sunscreen you apply
• Whether it is applied evenly
• Whether exposed areas are missed
• How often it is reapplied
• Swimming, perspiration and towel drying
• The strength of the UV index
• Your individual skin type and sensitivity

A sunscreen can only provide its tested protection when a sufficient and even layer is applied. Using too little may significantly reduce the protection achieved.

SPF 15, SPF 30 or SPF 50: what is the difference?

When applied correctly, SPF 15 filters approximately 93% of UVB radiation, SPF 30 approximately 97%, and SPF 50 approximately 98%.

Those percentages may appear very similar, but the difference becomes clearer when looking at the amount of UVB allowed through:

• SPF 15 allows roughly 7% through.
• SPF 30 allows roughly 3% through.
• SPF 50 allows roughly 2% through.

SPF 50 therefore allows less UVB radiation to reach the skin than SPF 30. The additional margin can be relevant for fair, sensitive or pigmentation-prone skin and during strong or prolonged exposure.

No sunscreen blocks 100% of ultraviolet radiation. Sunscreen should therefore be combined with shade, clothing and sensible timing rather than used to extend time in intense sunlight indefinitely.

Should you choose SPF 30 or SPF 50?

SPF 30 may provide appropriate everyday protection when the UV index is moderate and outdoor exposure is limited—provided that the sunscreen is broad-spectrum, applied generously and reapplied when necessary.

SPF 50 is particularly relevant when:

• The UV index is high, very high or extreme
• You expect to spend several hours outdoors
• Your skin burns easily
• Your skin is prone to pigmentation
• You are travelling closer to the equator
• You are at high altitude
• You are near water, bright sand or snow
• You want additional protection against visible UV-related ageing

For the face, many people prefer SPF 50 because this area is exposed so frequently and is often where pigmentation and visible ageing first become noticeable.

The most effective sunscreen is the one you will actually use

A high SPF is valuable, but the sensory experience matters too.

If a facial sunscreen feels extremely sticky, greasy, heavy or uncomfortable, many people instinctively apply too little—or stop using it altogether. A formula that feels pleasant on the skin is therefore not merely a luxury. It can make consistent and generous application more realistic.

This was an important consideration during the development of SKØN SKINCARE’s facial SPF 50. The aim was to create high protection while avoiding an unnecessarily heavy or enclosed sensation on the skin.

When we describe a formula as comfortable or breathable, we refer to how it feels and sits on the skin. It must still form the complete, even film required to provide the stated SPF protection.

Comfort should never be achieved by applying less.

What is the UV index?

The UV index describes the expected strength of ultraviolet radiation at a particular place and time.

A general guide is:

UV index 0–2: Low
Protection is usually less critical for short periods outdoors, although individual needs may differ.

UV index 3–5: Moderate
Use sunscreen on exposed skin and consider shade around the middle of the day.

UV index 6–7: High
Apply broad-spectrum sunscreen, wear protective clothing and reduce prolonged exposure during peak hours.

UV index 8–10: Very high
Seek shade, minimise direct midday exposure and be particularly careful with children and sensitive skin.

UV index 11+: Extreme
Avoid unnecessary direct exposure around the middle of the day and use several forms of protection.

WHO recommends sun-protection measures from UV index 3 and above.

Why temperature is not a reliable guide

One of the most common sunscreen mistakes is judging UV exposure by how warm the weather feels.

UV radiation cannot be measured by temperature alone.

A cool, windy day may still have a high UV index. This is especially relevant near the sea, where the wind can make the skin feel comfortable while exposure continues.

Likewise, a day in the mountains may feel fresh and cool even though altitude increases UV intensity. Water, bright sand and snow can also reflect UV radiation and increase exposure.

Check the UV index rather than relying on the temperature or appearance of the sky.

Can you get sunburnt on a cloudy day?

Yes.

Clouds can reduce some UV radiation, but they do not necessarily block enough to prevent sunburn or cumulative exposure. Bright, cloudy days may still require sunscreen, particularly when the UV index is 3 or higher.

Wind can make this more deceptive because it cools the skin and hides the sensation of heat.

Myth: “I cannot burn because it is cloudy.”

Reality: The UV index—not the clouds—is the more useful indication of whether protection is needed.

Do you need sunscreen every day?

Not everyone needs exactly the same sunscreen routine every day of the year.

The need depends on:

• The UV index
• Geography and season
• How much time you spend outside
• Your skin type
• Whether your skin is pigmentation-prone
• Whether you use treatments that increase sun sensitivity
• Whether you spend extended periods beside windows or driving

The face, ears, neck, upper chest and hands are frequently exposed and often benefit from daily protection during periods when the UV index is moderate or higher.

In Denmark and the rest of northern Europe, winter conditions can be very different from summer. Rather than following a rigid rule without context, use the UV index to adapt your routine.

When should sunscreen be applied?

Apply sunscreen as the final step in your morning skincare routine and before makeup.

A typical order is:

1. Cleanser
2. Mist or toner
3. Serum
4. Facial oil, when needed
5. Moisturiser
6. Sunscreen
7. Makeup

Allow the products underneath to settle before applying sunscreen.

Avoid mixing sunscreen directly into your moisturiser, serum or facial oil. Mixing products can make it difficult to create the even, continuous layer needed for reliable protection.

Layer the products instead.

How much sunscreen should you apply?

Many people apply significantly less sunscreen than the amount used during SPF testing.

Sunscreen should be applied generously and evenly. The exact amount can vary according to the product format and the size of the area, but the skin should be completely and consistently covered.

Do not forget:

• Ears
• Hairline
• Eyebrow area
• Sides of the nose
• Neck
• Upper chest
• Backs of the hands
• Tops of the feet
• Exposed scalp
• The area around the lips

For a sunscreen stick, make several slow passes across each area rather than applying one quick, thin stroke. Blend the edges carefully to avoid leaving small gaps.

How often should sunscreen be reapplied?

During prolonged outdoor exposure, sunscreen should generally be reapplied approximately every two hours.

Reapply sooner after:

• Swimming
• Heavy perspiration
• Towel drying
• Rubbing or wiping the skin
• Extended physical activity

Water-resistant sunscreen must also be reapplied. Water resistance does not mean waterproof or all-day protection.

The NHS recommends reapplying sunscreen every two hours and immediately after swimming, sweating or towel drying.

Your needs may be different during a working day spent mostly indoors than during a full day at the beach. Consider your real exposure, including commuting, driving, lunch outside and afternoon activities.

Is water-resistant sunscreen waterproof?

No sunscreen is truly waterproof.

A water-resistant sunscreen is formulated and tested to retain a defined level of protection after exposure to water. It may therefore be particularly useful during:

• Swimming
• Outdoor sport
• Beach days
• Warm weather
• Active family holidays
• Periods of heavy perspiration

However, the protective layer can still be affected by water, sweat, towels and friction.

Reapply after swimming—even when the product is labelled water-resistant.

Mineral sunscreen and zinc oxide

SKØN SKINCARE’s current sun-protection products use mineral filters based on zinc oxide.

Zinc oxide can provide broad-spectrum protection against both UVA and UVB radiation. Mineral formulas are often chosen by people seeking:

• Physical UV filters
• Fragrance-free sunscreen
• Zinc oxide-based protection
• Sun protection for sensitive skin
• A more minimal approach to sun care

Mineral sunscreen still needs to form a continuous protective film. Apply it generously and work it evenly across the skin.

Depending on the formula, quantity and skin tone, a mineral sunscreen may initially be more visible than some other sunscreen types. Apply it in sections and allow it time to settle rather than compensating by using too little.

Why fragrance-free sunscreen matters

All SKØN SKINCARE sunscreen products in the collection are fragrance-free.

This is relevant because sunscreen is applied generously and may be reapplied several times throughout the day. Skin can also become warm, exposed or more reactive during hot weather.

Avoiding added fragrance removes one unnecessary component from a product used under these conditions.

Fragrance-free sunscreen may be particularly relevant for:

• Sensitive or reactive skin
• Children
• People who avoid perfume in skincare
• Skin affected by heat and perspiration
• Anyone who prefers skincare without added scent

Fragrance-free does not always mean completely odourless. Individual raw materials can have their own subtle natural aroma without perfume having been added.

Can sunscreen be worn under makeup?

Yes.

Apply sunscreen after moisturiser and allow it to settle before applying makeup.

To reduce pilling or unevenness:

• Apply skincare in light, even layers.
• Allow each layer to absorb.
• Spread sunscreen gently without overworking it.
• Give it time to settle.
• Press or stipple makeup onto the skin rather than dragging it.

Makeup containing SPF can provide additional protection, but it is rarely applied in the same generous quantity used when testing a dedicated sunscreen.

For more reliable coverage, use a separate sunscreen underneath makeup.

Does sunscreen cause breakouts?

Sunscreen does not automatically cause breakouts, but not every formula will suit every skin type.

A product may feel too rich for one person and comfortable for another. Breakouts may also occur when sunscreen, makeup, perspiration and impurities are not removed thoroughly at the end of the day.

A gentle evening cleanse can help remove:

• Sunscreen
• Makeup
• Perspiration
• Excess oil
• Pollution and daily impurities

Avoid harshly stripping the skin in an attempt to remove sunscreen. The goal is thorough but gentle cleansing that respects the skin barrier.

Does darker skin need sunscreen?

Yes.

Skin with more melanin may burn less easily, but it is not immune to UV-related damage. Uneven pigmentation and dark marks may also become more persistent following UV exposure.

Broad-spectrum sunscreen can therefore be relevant for every skin tone.

The most suitable formula is one that offers reliable protection and a finish you are comfortable applying in the recommended amount.

Does sunscreen prevent vitamin D production?

This is a common concern.

Vitamin D needs vary between individuals and depend on several factors, including diet, geography, season, skin tone and lifestyle. It is not advisable to use deliberate sunburn or prolonged unprotected exposure as a vitamin D strategy.

People concerned about vitamin D should speak with a doctor or qualified healthcare professional about testing, diet or supplementation rather than reducing necessary sun protection.

Can you use last year’s sunscreen?

Check the expiry date and the period-after-opening symbol on the packaging.

Replace the product when:

• It is past its expiry date
• It has been open longer than recommended
• The texture, smell or colour has changed
• The formula has separated unexpectedly
• It has been stored in excessive heat for prolonged periods
• The packaging no longer closes properly

Do not store sunscreen in a hot car or leave it in direct sunlight for long periods. Heat can affect the product’s stability and sensory qualities.

Is a higher SPF always better?

A higher SPF can provide an additional margin of protection, but only when applied correctly.

A generously applied SPF 30 may provide better real-world protection than an SPF 50 applied in an extremely thin layer.

The better question is therefore not only, “Which number is highest?”

It is also:

• Will I apply enough?
• Is the formula comfortable?
• Does it offer UVA and UVB protection?
• Can I reapply it easily?
• Does it suit my skin and lifestyle?

For many people, a comfortable SPF 50 provides a reassuring combination of high protection and practical everyday use.

Common sunscreen myths

Myth 1: “I only need sunscreen on holiday”

UV exposure also happens while commuting, gardening, exercising, walking through the city or sitting outside for lunch.

Ordinary days count too.

Myth 2: “My foundation contains SPF, so I am fully protected”

Most people do not apply enough foundation to achieve the SPF stated on the packaging.

Use dedicated sunscreen underneath when meaningful protection is needed.

Myth 3: “Water-resistant means I do not need to reapply”

Water-resistant sunscreen still wears away and must be reapplied after swimming, sweating and towel drying.

Myth 4: “I do not need sunscreen because I tan rather than burn”

A tan is a response to UV exposure. Skin that rarely burns can still experience cumulative UV-related changes.

Myth 5: “SPF 50 blocks all UV radiation”

No sunscreen blocks 100% of ultraviolet radiation.

Shade, clothing, hats and sensible timing remain important.

Myth 6: “Sunscreen prevents me from getting any colour”

Sunscreen reduces UV exposure but cannot block every ray. The purpose should not be to use sunscreen as a way to prolong tanning, as no tan can be considered completely risk-free.

Myth 7: “I applied sunscreen this morning, so I am protected all day”

Protection can be reduced by time, perspiration, water, towels, rubbing and uneven application.

Reapplication matters during continued exposure.

Myth 8: “Sun protection is only about avoiding wrinkles”

Sun protection supports much more than the visible appearance of the skin. UV radiation can affect both skin and eye health, which is why WHO recommends a combination of sunscreen, shade, clothing and sunglasses.

A simple sun-protection routine

A good routine does not have to be complicated.

In the morning

Check the UV index and apply facial sunscreen as the final skincare step.

Before going outside

Make sure exposed areas are covered, including the ears, neck, chest and hands.

During prolonged exposure

Reapply around every two hours and sooner after swimming, sweating or towel drying.

When the UV index is high

Seek shade, wear a hat and protective clothing, and reduce direct exposure around the middle of the day.

In the evening

Remove sunscreen, makeup and daily impurities with a gentle but thorough cleanse. Follow with hydrating and barrier-supporting skincare according to your skin’s needs.

Which sunscreen format should you choose?

A facial sunscreen is ideal when you want an even base that fits into your morning skincare routine and sits comfortably beneath makeup.

A sunscreen stick is useful for targeted areas and reapplication during the day. It may be especially practical for:

• Nose and cheekbones
• Ears
• Shoulders
• Hands
• Exposed areas of the face and body
• Active days
• Family holidays

The formats can also be combined: use facial sunscreen as the even base layer and a sunstick for convenient, targeted reapplication.

What is the best sunscreen?

There is no single sunscreen that feels perfect for every person.

The best sunscreen is one that:

• Provides broad-spectrum UVA and UVB protection
• Has an appropriate SPF
• Can be applied generously
• Feels comfortable on your skin
• Fits naturally into your routine
• Is easy to reapply
• Does not remain unused in a bathroom drawer

For sensitive skin, a fragrance-free mineral SPF may be a particularly relevant choice. For strong or prolonged exposure, SPF 50 can provide an additional margin of protection.

Consistency is more valuable than searching endlessly for a theoretically perfect product that you do not enjoy wearing.

Enjoy the sun—with care

The sun is not an enemy. It is part of life.

But enjoying it responsibly means recognising that UV radiation can affect the skin even on ordinary, cloudy or cool days. Sunscreen is therefore not about fear, perfection or giving up the experiences we love.

It is about protection.

It is about preserving the investment you make in your skin through the rest of your routine.

And it is about finding a formula that feels so comfortable that applying enough—and using it consistently—becomes completely natural.

Apply generously. Reapply when needed. Check the UV index. Seek shade when the sun is strongest.

Then enjoy the light, warmth and outdoor moments with greater awareness and a little more care.