Important Key Factors to Choose the Right Sunscreen Gel
                     
How does sunscreen work?
The first thing we have to know is that, of all the radiation emitted by the 
sun, there are only two types of ultraviolet sun rays that can cause damage 
to our skin: we are talking about the famous UVB and UVA rays. 
UVB rays are the reason for skin burns. UVA rays are what makes us tan, 
but they are also responsible for photoaging, are associated with the loss of 
elasticity and the appearance of wrinkles, and cause the appearance of 
spots and lesions on the skin. Both UV rays cause skin cancer.
Sun creams protect our skin in two ways: on the one hand, they act as 
reflective screens, and on the other, they absorb ultraviolet radiation, 
preventing them from passing to our skin.
One tip: use broad-spectrum sunscreen gel, which protects your skin from 
UVB and UVA rays. And don't limit yourself to just using sunscreen only in 
summer, use sunscreen all year round, even on cloudy days.
Now we are going to move on to the practical part, we are going to buy our 
sunscreen and the typical questions come to mind ... what type of 
sunscreen is better? What SPF do I choose?
What format of sunscreen is better?
Is it better to use cream, spray, or aerosol sunscreen? It is common 
to think that sunscreen gel is better than sun sprays or aerosols, 
but sun protection does not depend on the format.
As a practical matter, we can recommend:
•The sunscreens are perfect to apply on dry skin; this format is 
great for use on the face, neck, arms. To prevent it from coming 
into contact with the eyes and mucous membranes. But they 
cannot be applied on damp skin, because their formula is diluted, 
and they lose effectiveness.
•The sprays are very handy if you have to apply yourself, you 
cream the same because there are areas that we find it hard to 
reach, and spray allows us to apply the sunscreen without a 
problem. Remember to apply a generous amount, and help your 
hands to distribute the product well. Be careful with windy days, 
because we may think that we are pouring out enough products 
but there is a part that flies.
What SPF to choose?
The Sun Protection Factor or SPF (Solar Protection Factor) is 
important when choosing sun creams.
The SPF tells us this is the number of times by which the time 
we can stay in the sun without burning is multiplied. We see it 
with an example, if your skin lasts 10 minutes without sun 
protection until redness appears, by putting protection with 
SPF 30; you are multiplying those 10 minutes by 30.
But be careful, you have to take into account that sweat, 
baths, and the towel maybe removing the sun protection. 
That is why it is recommended to reapply sunscreen every 
time we take a bath or approximately every 2 hours, even if 
it has an SPF factor of 50 +.
It must be made clear that there are no sun creams with a 
total screen. No sunscreen protects us from 100% of the sun's 
rays.
A classification of sunscreens has been established for years:
Medium sun protection: from SPF 15 to SPF 25 (they block 93% of 
the sun's rays)
High sun protection: from SPF 30 to SPF 50 (they block 97% of the 
sun's rays)
Very high sun protection: SPF 50 (they block 99% of the sun's rays)
From that level, the difference between a sunscreen with SPF 60 or 
SPF 90 is minimal; it is not much greater than an SPF 50. The 
dermatologist recommends that from Sunscreen Gel SPF 50, sun 
creams are only labeled with SPF 50, not let them rip you off and pay SPF
more for a sunscreen that's not worth it.
The biggest mistake we make when applying sunscreen is putting 
too little. For doing, it quickly, because we don't want to get stuck. 
In the end, we use half or a quarter of the amount we should put in. 
Almost all sunscreens say "apply a generous amount" in their 
directions for use, but we hardly ever do.
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