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Doctor insights on: Difference Sunscreen Sunblock

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Is there a difference between sunscreen and sunblock?

Is there a difference between sunscreen and sunblock?

Different mechanisms: Sunscreen decreases the effects from uv b but not uv a which leads to photo aging like wrinkles. A sunblock will have zinc or titanium oxide crystals to "block" the sun. ...Read more

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What is the difference between sunscreen and sunblock?

What is the difference between sunscreen and sunblock?

Sunscreen/sunblock: The difference between is how good they are at screening out harmful radiation from the sun. Blocks are stronger and thus more effective at keeping out those harmful UV rays. Blocks are also usually more visible. For instance, the white zinc oxide life guards use on their nose is more of a block. Nothing is 100% though, so hats with wide brims and lightweight clothing works well too! ...Read more

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What's the difference between sunblock or sunscreen?

What's the difference between sunblock or sunscreen?

Shield vs filter: True sunblocks essentially create a shield to effectively block out the sun with zinc oxide being one of the most common preparations. They tend to be opaque. Sunscreens are chemical agents which filter out undersireable wavelengths of the sun and come in a variety of strengths and formulations. They tend to be clear. The diagram represents the spectrum of coverage. ...Read more

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Is there a difference between sunblock and sunscreen?

Is there a difference between sunblock and sunscreen?

Nope: Sunscreens work via 2 possible ways: 1) chemical blocks that breakdown the uv rays as they pass through the skin and 2) physical blocks that prevent the uv rays from getting to the skin. I recommend the physical blocks (zinc and titanium) because they have a very good safety profile and work very effectively. If you are going to be in the sun - use a minimum of SPF 15 - follow product directions. ...Read more

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What are the differences between sun block and sunscreen?

What are the differences between sun block and sunscreen?

Sunscreen / Block: Sunscreens work via 2 possible ways: 1) chemical blocks that breakdown the uv rays as they pass through the skin and 2) physical blocks that prevent the uv rays from getting to the skin. I recommend the physical blocks (zinc and titanium) because they have a very good safety profile and work very effectively. If you are going to be in the sun - use a minimum of SPF 15 - follow product directions. ...Read more

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What is the difference btw physical or chemical sunscreen in terms of protection?

What is the difference btw physical or chemical sunscreen in terms of protection?

SPF: The degree of protection by physical barriers will depend on the type of fabric and how much of the suns rays are able to pass through. Specialty clothing, found at sports supply and camping stores, are lightweight and offer varying degrees of protection. Chemical barriers and the degree of protection they afford depends on ingredient (i.e. zinc oxide, PABA, etc) and concentrations ...Read more

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What's the difference between sunscreen with SPF 25 and SPF 50+? Which one I should use?

What's the difference between sunscreen with SPF 25 and SPF 50+? Which one I should use?

SPF 25 is fine.: The SPF refers to how much time one can spend in the sun without burning, on average of course. Typically we'd burn in ~10 minutes without any sunscreen. SPF x 10 then gives us the time we can spend with sunscreen. So SPF 25 gives us ~250 minutes, or ~4 hours. SPF 50 would give us ~500 minutes (~8.5 hours). For practical purposes, then, SPF 25 is usually high enough. ...Read more

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What's the difference between sunblock and suncreen and which one is better for sun protection?

What's the difference between sunblock and suncreen and which one is better for sun protection?

Sunscreens: The new ratings do not include a term, sunblock, any more. Sunscreens can protect against both ultraviolet a and ultraviolet b cellular damage to your skin. Some of the older ultraviolet a agents were found not to be stable in the sun! Newer generation sunscreens have photostable uva blockers. The old term of sunblock referred to the white mineral zinc oxide cream that people put on their noses. ...Read more

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Which is better: sunscreen or sunblock?

Which is better: sunscreen or sunblock?

Both are great: Sunblock normally consists of a physical blocker like zinc or titanium oxide which block and reflect both uva and uvb rays. Sunscreen usually means a chemical screen that interacts with the uvb rays to prevent sun damage. A combination of both us very common, but for very sensitive skin, a block is sometimes better. ...Read more

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Can you recommend a sunblock or sunscreen?

Can you recommend a sunblock or sunscreen?

High SPF: Healthtap Doctors are asked not to endorse specific brands or product lines. ...Read more

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What do the SPF numbers on sunblock/sunscreen mean? How do I know what the right amount of SPF is for me?

What do the SPF numbers on sunblock/sunscreen mean? How do I know what the right amount of SPF is for me?

Sunprotection factor: Spf means sun protection factor and is a measure of the amount of protection from the sun a sunscreen provides. So the higher the spf the more protection it gives from the sun and the longer you can stay out after application. It is difficult to say exactly how long you can stay out based on the spf only as it depends on sun intensity. So the higher the spf the better generally speaking. ...Read more

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How can I convince my kids to wear sunscreen/sunblock? Any tips (anything would be appreciated, please!)?

How can I convince my kids to wear sunscreen/sunblock? Any tips (anything would be appreciated, please!)?

Just do it: Your children are not in control of their lives-you are. When you put them in a car seat and buckle them in it is to protect them from injury. Sunscreen is no different and can be just as life saving. I have a father-in-law with end stage melanoma. His mother didn't use any sunscreen. Make the decision now to do what's right for your children. Someday they'll understand the love behind the lotion. ...Read more

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I don't want to get darker so I bought SPF 50 sunscreen but some people told me that sunblock makes you not get darker. Is that true?

I don't want to get darker so I bought SPF 50 sunscreen but some people told me that sunblock makes you not get darker. Is that true?

Sunscreen: Blocks the sun's rays which cause burning and tanning (darkening of the skin). Most people use suncreen to avoid this damage. ...Read more

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Sunblock or sunscreen to prevent getting darker? Any specific drugstore available ones you can recommend?

Sunblock or sunscreen to prevent getting darker? Any specific drugstore available ones you can recommend?

SPF 15 or higher: The higher you go on the spf, the longer it protects your skin. Try one that is waterproof and blocks both uva and uvb types of sun rays. Wearing a hat with a visor when outdoors as well as long sleeves and pants also helps! Many make ups also have sun protection in them now. You can put the sunscreen on after your shower in the am to remember to use it, too. ...Read more

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Can sunscreen/sunblock/suntan lotion be used for chemical purposes?

UVA & UVB: Zinc oxide now can be micronized and put in sunscreen. It acts as a physical barrier to sun... Other antioxidants can be placed as well. ...Read more

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Hi doc what should I use sunblock or sunscreen I do not want to get any darker also what should I use for swimming too sunblock or sunscreen?

Hi doc what should I use sunblock or sunscreen I do not want to get any darker also what should I use for swimming too sunblock or sunscreen?

Sunblock: I prefer sunblock - spf over 25
and I recommend to my patients - to use atleast three times a day and also to be used each time when they come out of the swimming pool. ...Read more

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Does sunscreen expire?

Does sunscreen expire?

Yes: Sunscreens have a shelf life of three years. After this, they start to lose their stability and efficacy. You should see an expiration date on your bottle of sunscreen and should use it before that date. If you don't see an expiration date, write the month and year you purchased it on the bottle and toss after three years. Do not use any sunscreen that has become lumpy or has turned an odd color. ...Read more

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What is the best sunscreen?

What is the best sunscreen?

Sunscreen: The best sunscreen should have a molecule that protects against UVB & UVA (UVA-2 and UVA-1). Zinc Oxide is the molecule that has the ability to block UVA & UVB. So when considering using a sunscreen, look for Zinc Oxide. ...Read more

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Should I wear sunscreen everyday?

Should I wear sunscreen everyday?

Yes: Even while your driving in a car sun still can do damage, skin seuticuals has a spf 50 I highly recommend
see your dermatologist or plastic surgeon to purchase it. ...Read more

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How does sunscreen actually work?

Sunscreen: Sunscreen combines organic and inorganic chemicals to filter the light from the sun so that less of it reaches the deeper layers of your skin. Like a screen door, some light penetrates, but not as much as if the door wasn't present. Sunblock, on the other hand, reflects or scatters the light away so that it doesn't reach the skin at all. ...Read more

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What is the best sunscreen to use?

What is the best sunscreen to use?

Zinc oxide: Many of the sunscreens available in the us are banned in europe due to concerns about carcinogenic risk of some of the ingredients. However, the risk of skin cancer after a sunburn far exceeds any potential risk from sunscreens. The safest sunscreens are the barrier sunscreens containing zinc oxide or titanium. ...Read more

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What makes sunscreen so important? |

Skin Cancer: Sunscreens protect your skin from the harmful uv rays of the sun. In addition to damaging the quality of the skin, they can cause cancers to develop. I recommend the physical blocks (zinc and titanium) because they have a very good safety profile and work very effectively. If you are going to be in the sun - use a minimum of SPF 15 - follow product directions. ...Read more

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Should I use a special sunscreen?   

Not really: The fda has recommended that the term sunblock be dropped as it is often very misleading and can result in patients believing they have more protection from the sun than they actually do. I agree, a good sunscreen with an spf of 50, that contains both a uvb protector and a metal such as zinc or titanium oxide for uva. That's all you need if you reapply it frequently. ...Read more

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Does more SPF mean better sunscreen?

Yes and no: 30 is better than 15, but anything over 30 is probably marketing hype rather than any true benefit. ...Read more

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What should I look for in a sunscreen?

What should I look for in a sunscreen?

2 things: You need 2 things: a good uvb protector. This is what the spf rating refers to. Octinoxate is wonderful and safe. No more than a 50 spf. Anything higher is useless and to full of other chemicals. You must have a metal in it such as zinc or titanium. These protect against uva rays. Higher spf is nonsense. You must reapply them frequently and avoid the sun to be affective. Wear a hat and be well! ...Read more

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How often do I need to apply sunscreen?

Lots!: Put on sunscreen about 20 minutes before heading into the sun. Then reapply every 2 hours (more often if you get sweaty or wet). Make sure you use a broad spectrum sunscreen that protects against both uva and uvb rays. Also- remember your hat and sunglasses! ...Read more

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What is the active element in sunscreen?

Sunscreen: Sunscreens work via 2 possible ways: 1) chemical blocks that breakdown the uv rays as they pass through the skin and 2) physical blocks that prevent the uv rays from getting to the skin. I recommend the physical blocks (zinc and titanium) because they have a very good safety profile and work very effectively. If you are going to be in the sun - use a minimum of SPF 15 - follow product directions. ...Read more

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