i think no...because...upto 15 spf...those included moisturizer...nd oily skin have so much in winters specially...
No. SPF 30 lets in 1/30 of burning UV rays, while SPF 50 lets in 1/50. Adding the two together is pointless and would not result in high levels of skin protection.
It gives your skin some moisture, keeping it hydrated. If your skin becomes too dry and lacking moisture, then it is a must to moisturize straight away! I recommend QV moisturizer, it has SPF 30+ and it is not oily to put on, I also recommend Nivea Be Beautiful Tinted Moisturizer.
How long is the vacation? You are still apt to burn with fair skin if you are using SPF 15 for 7-10 days longer.
SPF, or Sun Protection Factor, measures the effectiveness of sunscreen in protecting the skin from UV radiation, specifically UVB rays that cause sunburn. Sunscreen, often referred to as sun cream, contains active ingredients that absorb or reflect these harmful rays, with the SPF rating indicating how long it can protect the skin compared to unprotected skin. For example, an SPF of 30 means it would take 30 times longer for the skin to burn than without protection. Therefore, SPF is a critical aspect of sun cream formulations, guiding consumers in selecting the appropriate level of protection.
Eucerin is a great product for the face. It has SPF 30 and moisturizer to provide 24-hour softness. Also, it isn't greasy and is very lightweight. The Skin Cancer Foundation recommends this product.
Some lotions use as whitening, moisturizer and/or softening in skin. Some lotions are effective and works in skin especially lotion that have "Sun Block Protection" (SPF) to protect you in sun while your outside or at the beach. There are different SPF level (It depends how much you need/degree of heat of the sun) Examples: SPF 14, SPF 16, SPF 24, SPF 30, SPF 80 and more (much more higher level). Some lotions heal problems of skin Example: dry skin, cracked skin, burns, scrapes and protects minor cuts. And some are repellant to prevent bite of insects especially the bites of mosquito.
SPF numbers are determined through laboratory testing that measures the effectiveness of sunscreen in blocking UVB rays, which are responsible for sunburn. The testing involves applying a specific amount of sunscreen to human skin and exposing it to UV radiation, then assessing the time it takes for redness to appear. The SPF rating is calculated by comparing the time it takes for skin to burn with sunscreen to the time it takes without it. For example, if skin protected by sunscreen takes 30 minutes to burn, while unprotected skin burns in 10 minutes, the SPF would be 30.
They recommend about 30 SPF of Higher. But it also depends on how fair skinned you are, and how thin your skin is. The lighter the skin, the higher the number. Also, re-apply it every 2- 3 hours while out in the sun.
SPF or sun protection factor is the measure of the amount of time taken by the sun light or more specifically the ultra violet rays to cause irradiation to the skin which is commonly known as sun burn on the protected skin. For example, if for your normal skin the time taken for irradiation is 30 minutes and after applying the cream the duration is 300 minutes, then the sun protection factor for that particular product is 300 divided by 30, that is SPF 10. Normally the time taken for irradiation by normal skin ranges from 20 to 30 minutes and so you can easily find how much SPF you need in your day cream by calculating the number of minutes you are exposed to the sun. With increased value of SPF, the number of minutes of protection increases. The SPF requirement increases with increasing time of exposure to the sun.
In order for any sun tan product to provide any protection it has to have a high SPF number. The lower the SPF number, the lower the protection. Most dermatologists recommend an SPF number of at least 30.
SPF stands for sun protection factor. Higher SPF numbers would allow a person to be in the sun longer without burning. SPF 30 means that your skin will not burn until it has been exposed to 30 times the amount of solar energy that would normally cause it to burn. In other words, if you start to burn at 10 mins, applying an SPF 30 would know take 300 mins. to start burning (30x10= 300). However, there are many limitations to this rating (time of day, skin type, uv index, sunblock brand, water, sweat etc...) Also, SPF is just the protection factor against sunburn or UV B radiation and does not have any relation to UV A radiation, which causes long term skin damage.
An SPF of about 30