Barefaced
by auria
Notes on change, skin, and the journey to your truest self.
by auria
Notes on change, skin, and the journey to your truest self.
The term "sunblock" traditionally referred to products containing mineral ingredients like zinc oxide and titanium dioxide, which physically block UV rays from penetrating the skin. However, this terminology is no longer officially recognized due to its misleading implication that these products offer complete protection. No sunscreen, regardless of its formulation, can block 100% of UV radiation.
The concept of a complete "block" is simply not achievable. Even the most effective sunscreens allow some minimal amount of UV radiation to reach the skin. Furthermore, using the term "sunblock" can create a false sense of security, leading people to apply less sunscreen or skip reapplication, thereby reducing their overall protection.
Modern sunscreens come in various formulations, incorporating both mineral (physical) and chemical UV filters. Mineral sunscreens work by reflecting UV rays, while chemical sunscreens absorb UV radiation and convert it into heat, which is then released from the skin. Many products now combine both types of filters to offer broad-spectrum protection.
Sunscreen is a product designed to protect the skin from the harmful effects of ultraviolet (UV) radiation emitted by the sun. This protection is crucial for preventing sunburn, premature aging (photoaging), and reducing the risk of skin cancer.
Sunscreen works by creating a protective barrier on the skin that either absorbs or reflects UV rays. The effectiveness of a sunscreen is measured by its Sun Protection Factor (SPF), which indicates the level of protection against UVB rays, the primary cause of sunburn.
When choosing a sunscreen, two key factors to consider are its SPF and whether it offers broad-spectrum protection.
SPF, or Sun Protection Factor, measures the sunscreen's ability to block UVB rays. For example, an SPF of 30 blocks about 97% of UVB rays, while an SPF of 50 blocks about 98%. The higher the SPF, the greater the protection, but it's important to note that no sunscreen can block 100% of UVB rays.
Broad-spectrum protection means that the sunscreen protects against both UVA and UVB rays. UVA rays penetrate deeper into the skin and contribute to premature aging and skin cancer. Make sure your sunscreen is labeled as "broad spectrum" to ensure adequate protection against both types of UV radiation.
Selecting the right sunscreen depends on your skin type, lifestyle, and personal preferences. Consider the following factors when making your choice:
Both mineral and chemical sunscreens can provide effective sun protection. Mineral sunscreens are generally considered safer for sensitive skin and may be preferred by those concerned about the potential impact of chemical filters. Chemical sunscreens tend to be more lightweight and easier to apply.
To ensure optimal protection, proper sunscreen application and reapplication are crucial.
Most adults need about one ounce (shot glass size) of sunscreen to cover their entire body. Be sure to apply sunscreen to all exposed areas of the skin, including the face, ears, neck, hands, and feet.
Sunscreen should be reapplied every two hours, or more frequently if you are swimming or sweating. Even water-resistant sunscreens can lose their effectiveness after prolonged exposure to water or sweat.
The terms "sunscreen" and "sunblock" are often used interchangeably, but the concept of "sunblock" as providing complete protection is outdated and misleading. The important thing to remember is that all sunscreens, regardless of whether they contain mineral or chemical filters, work to protect the skin from harmful UV radiation. Choose a broad-spectrum sunscreen with an SPF of 30 or higher, and apply it liberally and frequently to stay protected from the sun's harmful rays. Remember consistent and correct application of sunscreen is key to long-term skin health.
While a higher SPF offers more protection, the difference between SPF 30 and SPF 50 is relatively small. Focus on using a broad-spectrum sunscreen and applying it correctly.
Sunscreen in makeup may not provide sufficient protection unless applied liberally and reapplied regularly. It is best to use a dedicated sunscreen product in addition to makeup.
Mineral sunscreens containing zinc oxide and titanium dioxide are generally considered safer for the environment compared to chemical sunscreens, which can harm coral reefs.
Yes, UV rays can penetrate clouds, so it is important to wear sunscreen even on cloudy days.
Sunscreen typically has a shelf life of three years. Check the expiration date on the product and discard any sunscreen that has expired or changed in consistency or color.
