How much sunscreen do I need?
To protect your face, neck, arms and legs, you’ll need about 1 ounce of sunscreen. Squeezed into your hand, 1 ounce of sunscreen is enough to completely cover your palm.
To protect your face and neck, you’ll need about a half teaspoon.
Should sunscreen come before or after other products?
So long as the sunscreen is at least SPF 30, water-resistant and broad-spectrum, it doesn’t matter in what order you apply your skin care products. Some people find it’s easiest to work with bare skin — before makeup or moisturizer have been added. Find what works best for your routine.
If you have concerns about layering specific products, speak with your dermatologist.
Does makeup with SPF work?
Makeup is not enough to protect your skin — even if it has a high SPF. You would need much more makeup than you typically use to reach the labeled SPF.
Are mineral sunscreens better?
Sunscreens are often grouped into two categories: chemical and mineral. Chemical sunscreens use ingredients like avobenzone, octisalate, octocrylene, homosalate and others. Mineral sunscreens use either zinc oxide or titanium dioxide. Both chemical and mineral sunscreens work similarly (by absorbing UV light and transforming that energy into negligible amounts of heat). Mineral sunscreens also reflect a small amount of UV light.
For some, chemical sunscreens can sting. If you have sensitive skin or frequently react to products, mineral sunscreen might be a better choice. The downside of mineral sunscreens is that they often leave a noticeable white cast, particularly on skin of color.
Otherwise, it’s a personal choice. The best sunscreen is the one you’ll reach for every day.
Do I really need to reapply sunscreen throughout the day?
Generally, sunscreen should be reapplied every two hours, especially after swimming or sweating.
If you work indoors and sit away from windows, you may not need a second application. Be mindful of how often you step outside, though. Keep a spare bottle of sunscreen at your desk just to be safe. Even a short stroll at lunch could put your skin at risk.
Keep in mind that no sunscreen is perfect. Wear wide-brimmed hats, sunglasses or other protective clothing, and seek shade whenever possible.