Most Commonly Asked Questions about Sunblock/Sunscreen

Can we apply sunscreen after moisturizer?

Its always good to apply sunscreen after you are done with your skin care regime as using serums or moisturizers over your sunscreen will affect the amount of protection it provides.

Can I use sunscreen while pregnant?

It is important to wear sunscreen while you are pregnant. Use one with at least an SPF of 30. Also, not all sunscreens are safe. There are many chemical sunscreens whose constituents can enter your bloodstream and can affect your fetus. It can also cause skin irritations and allergic reactions. Instead, use a natural sunscreen.

How long does sunscreen last once applied?

It usually lasts up to two to three hours, depending on the SPF. Ideally, the sunscreen should be applied 30 minutes before the skin is exposed to the skin. This allows the ingredients to bind to the skin properly. So, reapplying the sunscreen is as important as putting it on. Reapply it every two hours.

Does sunscreen over 30 SPF work?

Yes, sunscreens between SPF 30 and 50 work. However, there is only a tiny difference, SPF 30 protects against approximately 96% of UV rays whereas SPF 50 gives 98% protection from the sun. Therefore, a higher SPF does not necessarily mean greater protection.

What does the SPF number of sunscreen lotions mean?

The SPF refers to the ability of a sunscreen to block UVB rays that can cause sunburns, as well as UVA rays, that can cause deeper skin damage. The higher the SPF number, the higher the protection. But none provides 100% protection. The number shows the length of time your skin will be protected from burning, depending on your skin type. Check for the first sign of reddening in the sun without any protection (for eg., 3mins). Multiply that number by the SPF, that is, 50 * 3 (if the SPF is 50) = 150 minutes of sun protection.

Does expired sunscreen work?

All sunscreens have an expiration date mentioned on the bottle. The usual shelf life of a sunscreen is up to two to three years. However, you can still use it slightly over three years.