How to choose the right SPF for your skin type

Sunscreen is the most important skincare product you can use. Full stop. Dermatologists repeat it ad nauseam, and they're right: up to 80% of visible skin ageing is caused by UV radiation. Yet only a minority of Belgians use daily sun protection.

The reason? Confusion. There are so many options that choosing seems impossible. SPF 30 or 50? Chemical or mineral? Cream, spray or stick? In this article, we'll clear everything up.

What does SPF actually mean?

SPF stands for Sun Protection Factor and indicates how much longer you can stay in the sun without burning, compared to unprotected skin.

SPF 15 blocks ~93% of UVB radiation
SPF 30 blocks ~97% of UVB radiation
SPF 50 blocks ~98% of UVB radiation

Important: the difference between SPF 30 and SPF 50 is only 1% extra protection. Far more important than a high SPF number is how much you apply and how often you reapply.

UVA vs. UVB: know the difference

UVB causes sunburn (the "B" for "burn")
UVA penetrates deeper and causes ageing and pigmentation (the "A" for "ageing")

Always look for a product with broad spectrum protection that filters both UVA and UVB. In Europe, good UVA protection is recognised by the UVA logo in a circle on the packaging.

Which SPF suits your skin type?

Very fair skin (type I-II)

You burn quickly and rarely tan. Freckles are your faithful companions.

Advice:

Use at least SPF 50 in direct sunlight
Choose a product with high UVA protection
Apply extra generously - your skin needs all the help it can get
Consider UV-protective clothing as an extra layer

Fair to medium skin (type III)

You can tan but also burn relatively easily.

Advice:

SPF 30-50 is ideal for daily use
For intense exposure (beach, mountains) go for SPF 50
Don't forget ears, neck and hands - often neglected areas

Medium to dark skin (type IV-V)

You tan easily and rarely burn.

Advice:

SPF 30 is sufficient for daily use
Yes, dark skin also needs sun protection. UV radiation causes pigmentation issues and ageing in dark skin too
Look for formulas that don't leave a white cast - a known issue with mineral filters on darker skin tones

Very dark skin (type VI)

Sunburn is rare, but UV damage is real.

Advice:

SPF 15-30 for daily use
Focus on hyperpigmentation protection
Choose tinted or transparent formulas

Chemical vs. mineral: the great debate

Chemical sunscreens

How do they work? They absorb UV radiation and convert it to heat.

Common filters: Avobenzone, octisalate, octocrylene, homosalate

Pros:

Lightweight, transparent texture
Ideal under makeup
No white cast
Often more affordable

Cons:

May irritate sensitive skin
Some filters are controversial (oxybenzone)
Needs 15-20 minutes to activate

Mineral (physical) sunscreens

How do they work? They form a physical barrier that reflects UV radiation.

Filters: Zinc oxide and/or titanium dioxide

Pros:

Effective immediately after application
Suitable for sensitive and reactive skin
Safe during pregnancy
Reef-friendly

Cons:

May leave a white cast
Often thicker texture
Can settle into creases

Hybrid formulas

The latest generation combines chemical and mineral filters for the best of both worlds: good protection, lightweight texture and less irritation.

SPF in your day cream: enough?

Short answer: probably not.

Most day creams with SPF don't provide enough protection, simply because you don't apply enough. For adequate protection you need 2 mg per cm² - that's quite a substantial amount.

Better: use your day cream for hydration and apply a separate sunscreen on top.

Practical tips for optimal protection

The two-finger rule

Draw two lines of sunscreen from the tip of your middle finger to your wrist. That's the right amount for your entire face and neck.

Reapplication

Every 2 hours in direct sunlight
After swimming or sweating, even if it says "waterproof"
Use an SPF powder or spray over your makeup

Year round

In Belgium, UV radiation is strongest from April to September, but UVA radiation is present all year. Daily SPF isn't a luxury but a basic step.

Expiry date

Sunscreen loses effectiveness after opening. Check the PAO symbol (jar with open lid) on the packaging. Discard after the indicated period and start a fresh tube.

Common mistakes

Applying too little - The number one mistake. Most people use only 25-50% of the recommended amount
Forgetting eyes and lips - Use an SPF lip balm and wear sunglasses
Thinking makeup with SPF is enough - SPF in foundation is a bonus, not a replacement
Only applying in the sun - UV penetrates clouds and glass
One-time application - However good your product, protection decreases after 2 hours

Start at your pharmacy

The choice can be overwhelming, and that's precisely why your pharmacy is so valuable. Belgian pharmacists are trained to advise you on:

The right skin type and matching protection
Allergy-friendly alternatives
Child-friendly formulations
The best option for specific skin conditions (rosacea, acne, eczema)

Invest in good sun protection. Your skin - now and in the future - will thank you.

Disclaimer: This article is for informational purposes and does not replace dermatological advice.