Did you know that living in Kathmandu, at around 1,400 meters above sea level, means you’re getting hit with nearly 17% stronger UV rays than people at sea level?
Pretty surprising, right? With so much of our day spent outside, whether grabbing chiya on the street or commuting to work, have you ever stopped to think about how much sun your skin is actually soaking up?
Even more concerning is that some people are highly sensitive to UV rays, which puts them at a much greater risk of serious skin damage and skin cancer. This highlights why it’s important to wear sunscreen.
But that’s not enough. Before you buy sunscreen, understanding the SPF rating on your sunscreen is crucial because it tells you how much protection the product offers against harmful UVB rays, the main cause of sunburn and skin damage.
In this blog, we’ll explain what SPF ratings really mean, types of SPF rating, and share tips on how much sunscreen you should use here in Kathmandu to stay protected all day long.
What is SPF Rating in Sunscreen?
SPF stands for Sun Protection Factor, and it’s a number that tells you how well a sunscreen can protect your skin from the sun’s harmful UVB rays. These rays are primarily responsible for causing sunburn, skin damage, and increasing the risk of skin cancer.
The SPF number indicates how much longer you can stay in the sun without burning compared to if you weren’t wearing any sunscreen at all. For example, if your skin normally starts to burn after 10 minutes in the sun, applying an SPF 30 sunscreen theoretically allows you to stay protected for 30 times longer, that’s about 300 minutes.
Different Types of SPF Ratings
SPF ratings range from SPF 15 to SPF 100 . The SPF rating of sunscreens varies, and the most appropriate one for you will depend on your skin type, the amount of time you spend in the sun, and the UV exposure level. A brief summary of the typical SPF categories is provided below:
1. Low SPF (SPF 15-20)
Low-SPF sunscreens block around 93% to 96% of the sun’s damaging UVB rays. These tend to be excellent for persons with darker skin tones, who have more melanin and thus benefit from some natural protection. If you’re simply going to be outside for a short time, such as a quick walk or errands, this level may be sufficient. However, due to Kathmandu’s higher altitude and harsh sunlight, relying entirely on low SPF sunscreen may cause long-term damage to your skin.
2. Medium SPF (SPF 25-35)
Medium SPF sunscreens block around 96% to 97% of UVB radiation.. This is a preferred option for everyday protection, especially if you spend only a few hours outside each day. Many residents of cities and office professionals spend their commutes or lunch breaks outside, so an SPF in this range gives adequate protection. In Kathmandu, this level is suitable for casual outdoor activities, although it is recommended that you reapply repeatedly and utilize additional protection, such as hats or shade.
3. High SPF (SPF 40-50+)
High SPF sunscreens filter 97% to 98% of UVB rays, providing superior protection for fair-skinned people, children, and those with sensitive skin. This category is especially advised if you’ll be spending a lot of time outside, such as hiking, gardening, or working in the sun. Considering Kathmandu’s high altitude and clear skies, using a high SPF is a wise decision to limit the danger of sunburn and long-term skin damage. These sunscreens are thicker and may require greater attention to application, but they provide the necessary peace of mind for prolonged sun exposure.
Recommended Products
- Neutrogena Ultra Sheer Dry-Touch Sunscreen SPF 45
- Beauty of Joseon Aqua-Fresh Sunscreen SPF 50
- Round Lab Birch Juice Moisturizing Sun Cream SPF50
- Neutrogena Ultra Sheer Dry-Touch Water Resistant with Broad Spectrum SPF 55
4. Very High SPF (SPF 70 and above)
Very high SPF sunscreens provide the most effective protection, preventing up to 99% of UVB rays. These are typically designed for extreme situations, persons with high sun sensitivity, or medical problems like xeroderma pigmentosum. While the increase in UVB protection from SPF 50 to SPF 70+ is minimal, it can be useful for high-altitude treks or individuals who need maximal sun protection. Keep in mind that high SPF solutions can feel heavy on the skin and may require more frequent application to remain effective.
Recommended Products
- Banana Boat Sport Ultra Clear Sunscreen spray spf 100
- Neutrogena Ultra Sheer Dry-Touch Sunscreen SPF 70
| Important Note: No matter what SPF rating you choose, always look for broad-spectrum sunscreen. This means it protects against both UVB rays (which cause burns) and UVA rays (which penetrate deeper and contribute to premature aging and skin cancer). Both types of rays are harmful, especially in places like Kathmandu where the sun’s rays are stronger. |
Check out our full collection of sunscreens with different SPF levels to find the one that suits your skin.
Which SPF rating should I use during the summer and winter months in Kathmandu?
In Kathmandu, the strength of the sun changes with the seasons, but one thing’s for sure, you need to protect your skin all year round because of the city’s high altitude and clear skies.
Summer: UV intensity increases significantly during summer. That’s why it’s a smart move to go for a sunscreen with SPF 50 or higher SPF sunscreen for kathmandu weather. This level of protection shields against sunburn, skin damage, and long-term risks like skin cancer at bay, especially if you’re out and about a lot, whether it’s trekking, working, or just enjoying the outdoors.
Winter: You might think winter means less sun, but that’s not quite the case in Kathmandu. The thinner atmosphere at this altitude lets more UV rays sneak through, so your skin can still get damaged. For everyday winter days, SPF 30 to 40 usually does the job. But if you’re heading out for trekking, skiing, or spending long hours in snowy places, bump it up to SPF 50+, remember, snow reflects UV rays and can double your exposure.
How Much SPF Sunscreen Should You Use in Kathmandu, Nepal?
Choosing the right SPF rating is just one part of effective sun protection, using the right amount of sunscreen is equally important, especially in Kathmandu where the sun’s rays are stronger due to the high altitude.
How Much to Apply?
- For your face and neck, use about 1 full teaspoon (approximately 5 ml) of sunscreen.
- For your entire body, if wearing a swimsuit, use roughly 1 ounce (about 30 ml or a shot glass full) to cover all exposed skin evenly.
How Often Should You Reapply?
- Reapply sunscreen at least every two hours, or immediately after sweating, swimming, or towel drying.
- Even on cloudy days, UV rays penetrate the clouds, so sunscreen reapplication is necessary.
What About PA Ratings? Do They Matter?
Yes. The PA system comes from Japan and uses plus signs to show the level of UVA protection:
- PA+ – Some UVA protection
- PA++ – Moderate protection
- PA+++ – High protection
- PA++++ – Extremely high protection
So, the more pluses, the stronger the protection against UVA rays.
Which PA Rating Should You Look For?
If you’re in Kathmandu, where UV levels are high year-round due to altitude and clear skies, it’s best to choose a sunscreen with PA+++ or PA++++, especially if you’re spending time outdoors.
Is PA Rating the Same as SPF Rating?
No, PA rating and SPF rating are not the same, they measure protection against different types of ultraviolet (UV) rays.
- SPF (Sun Protection Factor) measures protection against UVB rays, which are the primary cause of sunburn and play a big role in causing skin cancer.
- PA rating indicates protection against UVA rays, which penetrate deeper into the skin, contributing to premature skin aging (like wrinkles and dark spots) and also increasing the risk of skin cancer.
Protecting Your Skin Starts with the Right SPF
Understanding SPF ratings and picking the right level of protection, whether low, medium, or high, is super important for keeping your skin healthy in the long run. It’s always better to use sunscreen with higher SPF number. But remember, even the best sunscreen won’t do its job if you don’t apply it properly and reapply it often throughout the day.
Don’t let Kathmandu’s strong UV rays catch you off guard! Find the perfect sunscreen that fits your lifestyle and skin needs. Browse our wide range of sunscreens online now, or drop by our store on Durbar Marg for personalized advice and expert tips. Your skin deserves the very best care every single day!