Yes. Higher altitudes have stronger UV radiation and lower air pressure, which can increase oxidative stress and dehydrate the skin. Sunscreen and antioxidants become even more critical.
If they do, choose non-comedogenic products and ensure thorough removal with a gentle cleanser. Never sleep in makeup, as it can clog pores and cause inflammation.
The SPF protection factor is regulated, so a drugstore SPF 50 is as effective as a luxury one. However, a luxury sunscreen may offer a more elegant, weightless finish under makeup or contain added skincare benefits like antioxidants, which can justify the cost for daily enjoyment.
A broad-spectrum sunscreen with at least SPF 30. It is the most effective product to prevent UV damage, which is the number one cause of skin aging in any environment.