What is Sunscreen? | How to Choose the Right Sunscreen?

What is Sunscreen? | How to Choose the Right Sunscreen?

What is Sunscreen? | How to Choose the Right Sunscreen? Learn what sunscreen is, how it works, and which type is most suitable for your skin type.

Skincare routines must include sunscreen, which protects the skin from the harmful effects of UV radiation from the sun.


A protective measure against the harmful effects of ultraviolet (UV) radiation from the sun, sunscreen is applied to the skin. In order to minimize the risk of sunburn, damage to the skin, and even skin cancer caused by excessive exposure to UV radiation, it is imperative to wear sunscreen whenever you plan to be outdoors. 

What is Sunscreen?

The purpose of sunscreen is to protect the skin from harmful ultraviolet (UV) rays generated by the sun. In addition to providing skin protection, excessive exposure to UV radiation can cause sunburn, skin damage, and even skin cancer. 

Sunscreen is available in the form of lotions, creams, sprays, and sticks that can also be applied directly to exposed skin before exposure to the sun.

Types of Sunscreen:

There are some types of sunscreen are following.

1. Chemical sunscreens

UV radiation is absorbed by these sunscreens before it can penetrate the skin and they typically contain a combination of chemicals, such as oxybenzone, avobenzone, and octinoxate, which absorb UV radiation from different wavelength ranges. 

There is no doubt that chemical sunscreens are easier to apply and spread evenly, but they may not be as effective at blocking UVA radiation and may cause skin irritation in some individuals.

2. Physical sunscreens

A physical barrier of zinc oxide or titanium dioxide creates a physical barrier that deflects UV radiation away from the skin. These sunscreens work by reflecting UV radiation away from the skin. 

In general, physical sunscreens are more effective at blocking UVA radiation and are less likely to cause skin irritation, but may be easy to apply and may not leave a visible residue.

How to Choose the Right Sunscreen?

To select the right sunscreen, there are several things to consider:

  • Sunscreens with a high SPF offer a greater degree of sun protection. SPF stands for Sun Protection Factor, which indicates the amount of protection the sunscreen offers. Sunscreens with a high SPF offer a greater degree of protection, so it is advisable to choose one with an SPF of at least 30.
  • The sunscreen should provide broad-spectrum protection from UVA and UVB radiation. 
  • To be sure that the sunscreen will provide protection from both types of radiation, look for a label stating “broad-spectrum” or “UVA/UVB protection.”
  • Water-resistant sunscreen is ideal if you will be sweating or swimming. 
  • This will ensure that the sunscreen remains on your skin and continues to provide protection even when you are swimming.
  • The UVA radiation that is responsible for tanning and aging of the skin can also cause premature aging, which includes wrinkles, age spots, and uneven skin tone, in addition to contributing to the development of skin cancer.

Tips for Using Sunscreen:

Following are some tips on how to use sunscreen effectively.

1. Apply sunscreen to all exposed skin

Protect all areas of your skin that will be exposed to the sun, including your face, neck, ears, arms, and legs. Apply sunscreen to your lips, as well, as they can be sensitive to UV rays.

2. Use enough sunscreen

To get the best sun protection, use about one ounce (one shot glass full) of sunscreen a day. The American Academy of Dermatology recommends applying sunscreen every two to three hours.

3. Reapply sunscreen regularly

The best way to ensure that your skin is fully protected throughout the day is to reapply sunscreen every two hours, or immediately following swimming or sweating.

4. Choose a broad-spectrum sunscreen

The perfect sunscreen should protect against both UVA and UVB radiation, so ensure that you look for a label that indicates “broad spectrum” or “UVA/UVB protection” to ensure you are getting the optimal level of protection.


How does sunscreen work?

Chemical sunscreens and physical sunscreens. In chemical sunscreens, UV radiation is absorbed before it can penetrate the skin, while in physical sunscreens, UV radiation is reflected away from the skin. 

Sunscreens of both types are effective in protecting the skin against UV radiation, but they function in slightly different ways.

Can I use sunscreen every day?

When used correctly, sunscreen may be used every day, as long as it contains a broad-spectrum sunscreen with an SPF of at least 30. To ensure that your skin is not irritated or allergic to it, it is important to choose a sunscreen that is appropriate for your skin type and that does not irritate it. 

A dermatologist may advise against using sunscreen daily if you have sensitive skin or are prone to allergies.

Is sunscreen really necessary?

Sunscreen is an essential component of any skincare regimen. Excessive exposure to ultraviolet radiation can cause sunburn, skin damage, and even cancer, so you need to protect your skin. Skin cancer can be reduced by using sunscreen, which helps to keep your skin healthy and youthful and reduces your risk of developing it.


A good sunscreen is an important part of any skincare routine, protecting your skin from the damaging effects of UV radiation. By using good sunscreen regularly, you can help to keep your skin looking young and healthy.

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