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.

Pilling is when a product rubs off the skin in tiny flakes or granules. It can be caused by improper application of your products or a formulation error in either your sunscreen or the skincare products you’re using beneath it. Once pilling occurs your SPF is no longer working effectively.

Sunscreen helps protect against photoaging, cellular DNA damage and hyper pigmentation, so you should wear sunscreen every day as part of your skincare routine. To prevent sunburn, reduce the risk of skin cancer, and decrease the likelihood of early skin aging we recommend you wear sunscreen every day.

Clinical signs of aging are influenced by extrinsic factors, especially sun exposure. UV exposure seems to be responsible for 80% of visible facial aging signs. (Study)  With proper protection from UV radiation, most premature aging of the skin can be avoided.

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.

 In order for the SPF found in your makeup to be an adequate source of sun protection, you would need to apply it 15 times thicker than you normally would. Imagine applying 15 times the amount of liquid foundation or 15 layers of powder foundation.

Wearing sunscreen is one of the best — and easiest — ways to protect your skin’s appearance and health at any age.

Used regularly, sunscreen helps prevent sunburn, skin cancer and premature aging.

Protection against skin cancer is a commonly cited reason for applying sunscreen daily — and for good reason.

But other benefits include:

• delaying signs of aging, like wrinkles, dry skin, age spots

• fading scars

• Preventing discoloration – UV rays can damage the skin’s blood vessel walls, thus causing them to thin. The thinning of blood vessels leaves the appearance of bruising or bleeding.

• Wearing sunscreen on your face will help prevent the worsening of existing hyper-pigmentation and the formation of new pigmentation

• Protecting from blue light

• Helps in the management of melasma –(Ultraviolet and infrared radiation from the sun are key in making melasma worse)

• And many more………………..

One of the biggest perks of a tinted sunscreen is that it protects against the rays we can see and those we can’t. Tinted sunscreens have been shown to block UV light as well as blue light which is emitted from our computers and cell phones. Blue light has been shown to cause oxidative stress on the skin, which can also cause wrinkles, fine lines, hyperpigmentation (including melasma) etc.

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.

Although melanin rich skin is naturally more protective against harmful rays from the sun than fair skin, people of all skin types can burn if they don’t wear sunscreen. The burn may not be as obvious on dark skin, but this does not mean it is harmless. It is important for everyone to take preventative measures against sunburn and skin cancer. 

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.

Apply sunscreen right the first time

Make sure you choose a formula formulated for your skin type options for dry to oily and acne-prone sensitive skin – then apply generously. One teaspoon of sunscreen should be applied to the face, neck and head area – any less and you might diminish the SPF.

It’s imperative before applying makeup, to begin with, a strong SPF as a base to ensure skin is protected from the start. This should be something that is a fixed part of your skincare routine. The best way to approach sunscreen and makeup is to lay a strong foundation of sunscreen before applying any makeup. 

Using tinted SPF will eliminate the white film left by some SPFs. To ensure you’re protected, apply sunscreen 15-20 minutes before going outdoors. Apply your sunscreen as the last step in your skincare regime, allowing approximately five minutes for it to absorb before putting on your makeup. One teaspoon of sunscreen should be applied to the face, neck and head area.

Use a sponge to reapply

Apply a small amount of sunscreen on a dry clean makeup sponge, then dot/dab – don’t drag – over your face. Concentrate on a small area at the time.

To avoid wiping off your foundation, go gently and press the sunscreen onto the skin, without dragging the sponge. When we recommend using light sunscreens on top of makeup, we’re talking about texture, not a low SPF. A lighter-weight sunscreen spreads more freely over the skin. You’ll easily be able to pat it in, whereas heavier, thicker formulas may require a degree of rubbing that might disturb your makeup.

Mist your face with a SPF spray/mist

A quick spray touchup is a great option to add sun protection without disturbing your makeup. However often spray sunscreen is not recommended because it’s more difficult to gauge whether it’s covering all of the exposed areas. Achieving full coverage is difficult to do, can be time-consuming, and requires a lot of product. Aerosol sprays could also potentially harm the lungs and trigger asthma attacks. However, for those who do prefer spray sunscreen, it is advised to avoid breathing the mist, while being careful to avoid eyes as well. You should also use your fingers to spread the product evenly and then wash your hands when done.

Brush on powder sunscreen:

Gently brush a powdered sunscreen on top of your makeup to add broad-spectrum protection. The powders can be in a loose powder or a pressed powder form. A powder SPF provides a matte finish.

These sunscreens are typically lighter on the skin and feel more topical than an absorptive cream.

Powdered sunscreens are especially popular with people who have sensitive skin or oily skin.

To effectively use powder sunscreen, it should be used as a reapplication or touch-up method every two hours after first applying a traditional, liquid sunscreen. The powders can be in a loose powder or a pressed powder form

Which Method Is Best?

The best method of sunscreen reapplication is the method you will actually do; while making sure it is the right one for your skin type and how/what type of makeup you wear. None of these methods are perfect and may take some practice. You may have to experiment with different sunscreens until you find the right one that works for you when applying over your makeup. The one that works best for you will depend on your skin type and how much or what kind of makeup you wear daily.