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What Is In Your Sunscreen? The ingredients are important.
There is more to sunscreens that meets the eye. Here are a few points you should keep in mind when selecting one:
1. Sun Protection Factor (SPF) is not the only way to judge sunscreen. SPF gives an indication of how well a sunscreen will protect your skin from ultraviolet-B light but tells you nothing about a sunscreen's ability to protect you from ultraviolet-A light (which causes wrinkles, and also contributes to skin cancer). If you want protection against UV-A, be sure that your sunscreen includes avobenzone (Parsol-1789), Mexoryl®, titanium dioxide and/or zinc oxide.
2. Some sunscreens last longer than others. UV light causes some sun screening agents to break down and lose their sun screening ability. Mexoryl®, titanium dioxide and zinc oxide do not break down when exposed to UV light, and so keep on protecting you from UV throughout the day. See frequently asked questions about sunscreens.
3. Some sun screening agents stay on the skin better than others, and this is important if you will be sweating heavily or swimming. In general, titanium dioxide and zinc oxide stay on the skin longer that most other sun screening agents. To reduce the chance that titanium or zinc based sunscreens will look pale or white on the skin, choose products containing "ultramicronized" titanium or zinc, which is so fine that it is transparent to visible light but still does a good job of absorbing and reflecting ultraviolet light.
4. Sunscreens are available as creams, gels, and sprays. Creams are best for use on smooth skin, and some creams are prepared using water-resistant formulas so that the product will stay on the skin longer if you are sweating or enjoying water sports. Gels and sprays are preferred by some people, and in particular can be easier to apply than creams on hairy areas and on the scalp.
When choosing sunscreens for yourself, your family and your workers it is important to consider the cosmetic acceptability of the sunscreen, because if someone does not LIKE the sunscreen they will not use it. Thus, a nice sunscreen with an SPF of 30 which you are happy to apply daily will give you more actual sun protection than a higher SPF product which is too greasy or too white for your taste so is not used on a regular basis.
If you get into the habit of applying a sunscreen (or a sunscreen-containing prescription product like Retisol-A 0.01% cream) every morning, you can really slow the clock down, and even reve
Frequently Asked Questions About Sunscreen And Sunburns
1. "How Much Sunscreen Should I Apply?"
The average user of sunscreen tends to use significantly less sunscreen than the amount required to achieve the SPF listed on the container.
2. "How Often Should I Apply Sunscreen When I'm Out In The Sun?'"
Many experts recommend that frequent application during sun exposure is required. However, a group of children were tested by spreading on 1 application of sunscreen to one side of their bodies, and four applications to the other.
They then spent 6 hours in the sun. One application provided the same level of protection as four applications, confirming the adequacy of a single daily application of a sunscreen in that situation.
3. "How Long Before Sun Exposure Should I Apply Sunscreen To My Skin?"
As molecules of sunscreen are present in their active state in the sunscreen, sunscreens work immediately upon application. The only reason for application early is to allow absorption into the skin so that the sunscreen is less likely to be washed off, should the person be entering the water. Even so, modern sunscreens are quite resistant to removal from the skin.
4. "Sun Protection Factor (SPF) - What Is It?"
SPF is the ratio of the minimal ultraviolet dose required to produce redness with and without a sunscreen. For example, if it took ½ hour for your skin to become sunburned without any sunscreen, then for a sunscreen that has a 15 SPF rating, you could stay in the sun for 15 times longer (or 7.5 hours) before you get sunburned. This is provided, of course, that you've applied the sunscreen properly so that you're getting the prescribed protection.
5. "Reactions To Sunscreens?"
Sunscreens can be both an irritant and an allergen, though allergic reactions are rare. Irritant reactions, however, abound. One classic error in sunscreen application is to put a large amount of sunscreen on the forehead. Perspiration and gravity can cause the sunscreen to migrate down your forehead into your eyes, causing a stinging sensation. Some people attribute this to an allergic reaction and discontinue use. It's also important to wash your hands after applying sunscreen, since rubbing your sunscreen covered finger near your eyes can induce an irritant reaction.
6. "Why Is It Important To Use Sunscreens During Childhood?"
It appears that a great deal of time can elapse between actual sun damage and the development of skin cancer or other skin problems like photoaging. Therefore, it is important to protect your skin from an early age when you are out in the sun.
7. "Sunscreens And The Elderly?"
Many elderly people can become quite obsessed by sun avoidance, and their quality of life can suffer. Sometimes, if they are diagnosed with an actinic keratosis or basal cell carcinoma, they can become anxious and almost leap from shadow to shadow. However, few of them are likely to develop new skin cancers from present sun exposure. As long as they are prudent about avoiding excessive sun exposure and protecting their skin to prevent sunburn, they can continue to enjoy time outdoors.
8. "Can Sunscreens Prevent Cancer?"
There is clear evidence that sunscreens are helpful in preventing actinic keratoses, which are warty lesions that can occur on sun-exposed skin of the face or hands. Research has shown that these lesions can develop into a cancer called squamous cell carcinoma, and that this is linked to a cumulative exposure to the sun.
However, there is surprisingly little evidence that sunscreens have much effect in preventing another kind of skin cancer called basal cell carcinoma, or for malignant melanoma. For malignant melanoma and for basal cell carcinoma, the character and timing, that is, the type of sunlight and your age at the time of the exposure to the sun appears to be more important than the cumulative dose.
Source1 Source2
There is more to sunscreens that meets the eye. Here are a few points you should keep in mind when selecting one:
1. Sun Protection Factor (SPF) is not the only way to judge sunscreen. SPF gives an indication of how well a sunscreen will protect your skin from ultraviolet-B light but tells you nothing about a sunscreen's ability to protect you from ultraviolet-A light (which causes wrinkles, and also contributes to skin cancer). If you want protection against UV-A, be sure that your sunscreen includes avobenzone (Parsol-1789), Mexoryl®, titanium dioxide and/or zinc oxide.
2. Some sunscreens last longer than others. UV light causes some sun screening agents to break down and lose their sun screening ability. Mexoryl®, titanium dioxide and zinc oxide do not break down when exposed to UV light, and so keep on protecting you from UV throughout the day. See frequently asked questions about sunscreens.
3. Some sun screening agents stay on the skin better than others, and this is important if you will be sweating heavily or swimming. In general, titanium dioxide and zinc oxide stay on the skin longer that most other sun screening agents. To reduce the chance that titanium or zinc based sunscreens will look pale or white on the skin, choose products containing "ultramicronized" titanium or zinc, which is so fine that it is transparent to visible light but still does a good job of absorbing and reflecting ultraviolet light.
4. Sunscreens are available as creams, gels, and sprays. Creams are best for use on smooth skin, and some creams are prepared using water-resistant formulas so that the product will stay on the skin longer if you are sweating or enjoying water sports. Gels and sprays are preferred by some people, and in particular can be easier to apply than creams on hairy areas and on the scalp.
When choosing sunscreens for yourself, your family and your workers it is important to consider the cosmetic acceptability of the sunscreen, because if someone does not LIKE the sunscreen they will not use it. Thus, a nice sunscreen with an SPF of 30 which you are happy to apply daily will give you more actual sun protection than a higher SPF product which is too greasy or too white for your taste so is not used on a regular basis.
If you get into the habit of applying a sunscreen (or a sunscreen-containing prescription product like Retisol-A 0.01% cream) every morning, you can really slow the clock down, and even reve
Frequently Asked Questions About Sunscreen And Sunburns
1. "How Much Sunscreen Should I Apply?"
The average user of sunscreen tends to use significantly less sunscreen than the amount required to achieve the SPF listed on the container.
2. "How Often Should I Apply Sunscreen When I'm Out In The Sun?'"
Many experts recommend that frequent application during sun exposure is required. However, a group of children were tested by spreading on 1 application of sunscreen to one side of their bodies, and four applications to the other.
They then spent 6 hours in the sun. One application provided the same level of protection as four applications, confirming the adequacy of a single daily application of a sunscreen in that situation.
3. "How Long Before Sun Exposure Should I Apply Sunscreen To My Skin?"
As molecules of sunscreen are present in their active state in the sunscreen, sunscreens work immediately upon application. The only reason for application early is to allow absorption into the skin so that the sunscreen is less likely to be washed off, should the person be entering the water. Even so, modern sunscreens are quite resistant to removal from the skin.
4. "Sun Protection Factor (SPF) - What Is It?"
SPF is the ratio of the minimal ultraviolet dose required to produce redness with and without a sunscreen. For example, if it took ½ hour for your skin to become sunburned without any sunscreen, then for a sunscreen that has a 15 SPF rating, you could stay in the sun for 15 times longer (or 7.5 hours) before you get sunburned. This is provided, of course, that you've applied the sunscreen properly so that you're getting the prescribed protection.
5. "Reactions To Sunscreens?"
Sunscreens can be both an irritant and an allergen, though allergic reactions are rare. Irritant reactions, however, abound. One classic error in sunscreen application is to put a large amount of sunscreen on the forehead. Perspiration and gravity can cause the sunscreen to migrate down your forehead into your eyes, causing a stinging sensation. Some people attribute this to an allergic reaction and discontinue use. It's also important to wash your hands after applying sunscreen, since rubbing your sunscreen covered finger near your eyes can induce an irritant reaction.
6. "Why Is It Important To Use Sunscreens During Childhood?"
It appears that a great deal of time can elapse between actual sun damage and the development of skin cancer or other skin problems like photoaging. Therefore, it is important to protect your skin from an early age when you are out in the sun.
7. "Sunscreens And The Elderly?"
Many elderly people can become quite obsessed by sun avoidance, and their quality of life can suffer. Sometimes, if they are diagnosed with an actinic keratosis or basal cell carcinoma, they can become anxious and almost leap from shadow to shadow. However, few of them are likely to develop new skin cancers from present sun exposure. As long as they are prudent about avoiding excessive sun exposure and protecting their skin to prevent sunburn, they can continue to enjoy time outdoors.
8. "Can Sunscreens Prevent Cancer?"
There is clear evidence that sunscreens are helpful in preventing actinic keratoses, which are warty lesions that can occur on sun-exposed skin of the face or hands. Research has shown that these lesions can develop into a cancer called squamous cell carcinoma, and that this is linked to a cumulative exposure to the sun.
However, there is surprisingly little evidence that sunscreens have much effect in preventing another kind of skin cancer called basal cell carcinoma, or for malignant melanoma. For malignant melanoma and for basal cell carcinoma, the character and timing, that is, the type of sunlight and your age at the time of the exposure to the sun appears to be more important than the cumulative dose.
Source1 Source2
