Standing in front of the sunscreen shelf, it's natural to think a bigger number is always better. The truth is more useful: SPF 50 and SPF 70 are closer than they look, and how you apply your sunscreen matters as much as the number on the bottle. Here's how to decide which one suits your life in Pakistan.
What SPF 50 and SPF 70 actually mean
SPF (Sun Protection Factor) measures protection against UVB rays, the rays that cause sunburn. It doesn't measure UVA protection; for that, look for broad spectrum on the label.
- SPF 50 blocks about 98% of UVB rays.
- SPF 70 blocks roughly 98.5% of UVB rays.
On paper the gap is small. In real life it can matter more than it looks, because most people apply much less sunscreen than the amount used in lab tests. A higher SPF gives you some extra margin when your layer is thinner than ideal. New to SPF? Read What is SPF in sunscreen?
The rule that applies to both: reapply
No SPF lasts all day. Sweat, touching your face, wiping and time all wear sunscreen down. Whether you use SPF 50 or SPF 70, reapply about every two hours when you're outdoors, and after sweating or swimming.
When SPF 50 is enough
- You spend most of the day indoors
- Your time outside is short, such as commuting or errands
- You reliably apply a generous layer and reapply when needed
When SPF 70 is the better choice
- You spend long hours outdoors in direct sun, such as fieldwork, driving a bike, or outdoor sports
- You're in the northern areas, near water, or on snow, where UV is stronger
- You're treating pigmentation, acne marks or melasma and want maximum protection
- You use exfoliants like glycolic or salicylic acid, which make skin more sun-sensitive
- You know you tend to apply too little or forget to reapply
Our sunscreen: MAD Chemist SPF 70
Our Sunscreen SPF 70 gives broad-spectrum UVA and UVB protection in a lightweight, non-greasy texture with no white cast. It's made for Pakistan's strong sun and sits well under makeup, so it's easy to wear every day.
How to apply sunscreen properly
- Cleanse and moisturise, then let your moisturiser settle.
- Apply sunscreen as the last step of your morning routine.
- Use about two finger-lengths for your face and neck.
- Apply 15 to 20 minutes before going out.
- Cover all exposed skin, including ears, neck and the backs of your hands.
- Reapply every two hours outdoors.
Sunscreen isn't just for summer either. Read why sunscreen matters in winter.
Frequently asked questions
Is SPF 70 twice as strong as SPF 30?
No. SPF 30 blocks about 97% of UVB and SPF 70 about 98.5%. Higher SPFs add small extra gains, which help most when you're outdoors for long or apply too thinly.
Does SPF 70 mean I don't need to reapply?
No. Every sunscreen needs reapplying about every two hours outdoors.
Is SPF 70 safe for everyday use?
Yes. If the texture is comfortable for your skin, you can wear SPF 70 every day.
Which SPF is best for pigmentation?
A high, broad-spectrum SPF worn every day and reapplied. Sun exposure is what keeps dark spots from fading.