SPF cream or sunscreen cream is an indispensable ally in the fight against the harmful effects of ultraviolet rays. This cream not only moisturizes and nourishes the skin, but also provides an effective barrier against solar radiation that can cause sunburn, premature aging and even skin cancer. But, have you wondered why it is recommended to use a protection factor, generally SPF 50 cream , to the detriment of those with a weaker SPF? Or why it's good to use sunscreen regardless of the season? Answers to these questions, as well as many other details, you will find in this detailed and comprehensive article.
What Is SPF?
SPF, or sun protection factor, is an essential concept when it comes to protecting your skin from the harmful effects of ultraviolet (UV) rays from the sun. When you understand the role of SPF, you will be able to choose the right sunscreen products to effectively protect your skin against sunburn, premature aging and the risk of skin cancer.
The SPF value indicates how long the skin can be exposed to the sun without burning, compared to uncovered skin. For example, if it would take the average person 10 minutes to get sunburned without protection, applying an SPF 30 cream could extend that time by 30 times, up to 300 minutes.
However, it is important to remember that the SPF value is not proportional to the degree of protection. For example, a product with SPF 30 does not provide twice as much protection as one with SPF 15. Instead, the difference in protection is smaller because SPF is measured on a logarithmic scale.
That's why it's important to always use sunscreen with an adequate level of SPF and to protect our skin adequately from UV rays by wearing protective clothing and avoiding prolonged exposure to the sun during peak hours. By regularly using SPF cream, we protect our skin against damage caused by sun exposure.
What are UVA/UVB rays?
UV rays, divided into two main categories - UVA and UVB - are types of invisible solar radiation that penetrate the Earth's atmosphere and can harm people's skin and eyes.
UVA (ultraviolet type A) rays are radiation with longer wavelengths and less energy than UVBs. They penetrate deep into the skin and are responsible for premature aging of the skin, causing wrinkles, loss of elasticity and the appearance of pigment spots. UVA rays can also penetrate glass and other materials, so exposure to the sun even while driving or sitting indoors can contribute to skin damage.
On the other hand, UVB (ultraviolet B) rays have shorter wavelengths and more energy than UVA. They affect the upper layer of the skin and are the main cause of sunburn. UVB radiation is also an important factor in the development of skin cancer, as it can damage cellular DNA and cause genetic mutations that lead to the formation of cancerous tumors.
It is important to protect our skin against both types of UV radiation to prevent long-term damage. Broad-spectrum sunscreens provide protection against both UVA and UVB rays, helping to prevent premature skin aging, sunburn, and the risk of skin cancer.
Wearing protective clothing, umbrella and sunglasses with UV protection are also important measures to protect us from harmful solar radiation. In addition, avoiding prolonged sun exposure during peak hours and sitting in the shade when possible are additional strategies to reduce UV exposure and maintain long-term skin health.
Creams with SPF
SPF creams protect the skin from radiation with the help of filters, which contain different types of ingredients. Sunscreens are active substances used in sunscreen products to protect the skin against ultraviolet (UV) radiation from the sun. These filters can be divided into two main categories: organic and inorganic, each with specific characteristics and benefits.
Organic (chemical) sunscreens
They are composed of organic molecules that absorb UV radiation and transform it into heat, without allowing it to penetrate the skin. These molecules are often derived from organic compounds such as avobenzone, octinoxate, octocrylene, octibenzone , etc. Organic filters are known for their light texture that integrates well with sunscreen products and their ability to provide effective protection against UVB and UVA rays.
Inorganic (mineral) sunscreens
They are composed of mineral particles, such as zinc oxide and titanium dioxide, which reflect and disperse UV radiation from the surface of the skin. These particles act as a physical barrier and provide immediate protection against UV rays. Inorganic filters are less susceptible to irritation or allergic reactions, making them suitable for sensitive skin or for use on children. They are often preferred for use in sunscreen products for babies and people with sensitive skin.
Both types of sunscreens have advantages and disadvantages, and the choice between them depends on individual preferences, skin type and specific needs. Sunscreen products may contain a combination of organic and inorganic filters to provide effective protection against all types of UV radiation. Regardless of the type of filters used, it is important to apply sunscreen products regularly and generously to protect our skin from damage caused by sun exposure.
Face creams with SPF
Face creams that contain sun protection factor (SPF) are a vital element in your daily skin care routine. These products not only hydrate and nourish the skin, but also provide an effective barrier against UV radiation, helping to prevent sunburn, premature skin aging and the risk of skin cancer. Here's a closer look at the different types of face creams that contain SPF:
Moisturizers with SPF: These products are designed to provide hydration and sun protection at the same time. They are suitable for daily use and are available in a variety of formulas adapted to different skin types. For example, there are spf cream for oily skin , spf cream for dry skin . Moisturizers with SPF are great for creating a base under makeup and protecting the skin from the negative effects of sun exposure throughout the day.
Anti-Wrinkle Creams with SPF: These face creams are created to fight the signs of skin aging, such as fine lines and wrinkles , while also providing sun protection. They often contain active ingredients such as antioxidants and peptides, which help stimulate collagen production and maintain skin elasticity. Anti-wrinkle creams with SPF are ideal for people interested in protecting and improving the appearance of their skin at the same time.
BB and CC Creams with SPF: These multipurpose products provide light to medium coverage for skin imperfections while also providing sun protection. BB Creams (Beauty Balm) and CC Creams (Colour Correcting) are great for evening out skin tone and covering imperfections while providing a barrier against UV rays. They are suitable for daily use and for people who want to achieve a natural and glowing skin.
SPF Day Creams: These products are specially formulated to be used in your morning skin care routine, providing all-day hydration and sun protection. They may contain ingredients such as vitamins C and E, which help protect the skin against free radicals and stimulate cell regeneration. Day creams with SPF are essential to protect the skin during sun exposure during everyday activities.
SPF values
SPF values, or sun protection factor, are a measure of a sunscreen's effectiveness in preventing sunburn caused by ultraviolet B (UVB) radiation. From SPF 5 to SPF 50, there is a range of protection levels available, each offering varying degrees of protection against sunburn and other skin damage.
SPF 5-15: Products with SPF between 5 and 15 provide minimal to moderate protection against UVB rays. They are suitable for people who spend little time outdoors or for people with a naturally higher sun tolerance. However, the use of these products may not provide sufficient protection against sunburn, especially for more sensitive skin or in conditions of intense sun exposure.
SPF 20-30: Products with SPF between 20 and 30 provide moderate to high protection against UVB rays. They block about 95-97% of UVB radiation and are recommended for most people, especially for outdoor activities and prolonged sun exposure. SPF 30 is considered a good option for daily use and can provide enough protection for most people.
SPF 40-50: Products with SPF between 40 and 50 offer very high protection against UVB radiation. They block about 98% or more of UVB radiation and are recommended for people with very sensitive skin to the sun, young children or for sun exposure in areas with high solar intensity. SPF 50 is considered the highest level of protection commercially available and is often used in sunscreen products aimed at the most vulnerable population groups.
It is important to remember that regardless of the SPF value, it is essential to apply sunscreen regularly and generously, to reapply after swimming or excessive sweating, and to avoid prolonged exposure to the sun during peak hours.
How to Choose the Right SPF for Your Skin?
Below you will find useful tips for each skin type.
For light skin:
- Fair-skinned people are more susceptible to sunburn and other skin problems caused by sun exposure.
- Apply a sunscreen with a high SPF, preferably SPF 30 and up.
- Be sure to apply a generous amount of product all over your face and neck, paying particular attention to exposed areas such as your nose, cheeks and forehead.
- Reapply sunscreen every two hours or more often, especially after swimming or excessive sweating.
- People with normal skin can use a wider range of sunscreen products, but they need to be aware of the specific needs of their skin.
- Apply a sunscreen with an appropriate SPF, from SPF 15 or higher, depending on sun exposure and skin tolerance.
- Evenly distribute the product over the entire face and neck and massage gently to ensure even coverage.
- Reapply the product at regular intervals, especially after activities that involve sweating or prolonged sun exposure.
- Dark-skinned people have a higher level of melanin in their skin, which gives them natural protection against UV rays, but they are not immune to sun damage.
- Apply a sunscreen with a minimum SPF of 15, although SPF 30 or higher is recommended for optimal protection.
- Be sure to cover the entire surface of your face and neck with sunscreen, as no skin type is immune to the harmful effects of UV rays.
- Reapply the product regularly, especially after swimming or excessive sweating, to maintain skin protection.
Regardless of skin type, it's important to use broad-spectrum sunscreens that offer protection against UVA and UVB rays.
In conclusion, SPF is an important measure of the skin's protection against UVB radiation and the harmful effects of sun exposure. By taking proper protective measures and using the right spf cream, we can enjoy the sun safely and maintain long-term skin health.
Frequently Asked Questions
- What is SPF and why is it important?
- SPF stands for sun protection factor and indicates the level of protection against UVB radiation.
- It is important to prevent sunburn, premature skin aging and the risk of skin cancer.
- What does SPF 50 mean?
- SPF 50 indicates that the sunscreen product offers very high protection against UVB radiation.
- It blocks approximately 98% of UVB radiation and is recommended for sensitive skin or intense sun exposure.
- How do face creams with SPF work?
- SPF face creams contain ingredients that block or absorb UVB radiation, providing skin protection from sunburn and sun damage.
- They hydrate and nourish the skin at the same time, helping to maintain its health and appearance.
- What are the benefits of face cream with SPF?
- Protects against UV radiation, preventing sunburn and premature aging of the skin.
- They hydrate and nourish the skin, providing complete skin care.
- They can be used daily as part of your skin care routine.
- When should we use an SPF 50 face cream?
- It is recommended to use a cream with SPF 50 in situations where exposure to the sun is intense or for people with very sensitive skin to the sun.
- It is also suitable for extended outdoor activities or beach holidays.
- How do we apply an SPF 50 face cream correctly?
- Apply a generous amount of product to the entire face and neck 15-30 minutes before sun exposure.
- Reapply every two hours or more often, especially after swimming or excessive sweating.
- Be sure to cover the entire surface exposed to the sun for optimal protection.