you won’t be able to achieve the SPF rating listed on
the product’s bottle. In fact, if you use only a small
amount of sunscreen, you’re likely to cut the SPF rating
by half or more, reducing an SPF of 30 to an SPF of 20 or
15, which are still acceptable. However, when a 15 SPF effectively
drops to a seven or eight, it may not provide enough protection,
especially for people with very fair or sensitive skin.
3. Follow this rule of thumb: even if the label says the product
is “waterproof” “sweat-proof~” or
“long-lasting,” still reapply it every two hours
you stay out in the sun.
4. You must reapply sunscreen immediately after exercising
or swimming. Despite manufacturers’ claims that certain
products are water-proof or sweat-proof, no sunscreen is completely
sweat-proof or waterproof.
5. You also need to apply sunscreen frequently if you participate
in out-door activities, such as tennis, golf, sailing, gardening,
horseback riding, etc.
6. Don’t make the mistake of using sunscreen as an excuse
to lie out in the sun for long periods of time. No matter
how much sunscreen you use, you can wind up with more sun
damage this way than you would had you laid in the sun for
just a short period and gone inside before you started to
burn. Sunscreen can be misused by allowing you to stay out
for such extended periods of time without early signs of burning
that you can end up with ultraviolet damage without realizing
it.
7. Throw out your sunscreen after one year, the lifespan of
any sun-screen- sunblock product. is about 12 months
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