Sunscreen, also known as sunblock or sun cream, is a photoprotective topical product for the skin that mainly absorbs, or to a much lesser extent reflects, some of the sun's ultraviolet (UV) radiation and thus helps protect against sunburn and most importantly prevent skin cancer. Sunscreens come as lotions, sprays, gels, foams (such as an expanded foam lotion or whipped lotion), sticks, powders and other topical products. Sunscreens are common supplements to clothing, particularly sunglasses, sunhats and special sun protective clothing, and other forms of photoprotection (such as umbrellas).
The first sunscreen in the world was invented in Australia, by chemist H.A. Milton Blake, in 1932 formulating with the UV filter 'salol' (phenyl salicylate) at a concentration of 10%. Its protection was verified by the University of Adelaide and it was also produced commercially by Blake's company, Hamilton Laboratories. Despite sunscreen being relatively new, sun protection practices have been observed since at least the ancient Egyptians "who used ingredients such as rice bran, jasmine, and lupine" to provide sun protection.
Sunscreens are classified into mineral (also referred to as physical) sunscreens (i.e., zinc oxide and titanium dioxide) and chemical (also referred to as petrochemical, as they are typically derived from petroleum) sunscreens.Despite popular belief, both types of sunscreens work mainly by absorption of UV light, not by reflecting or scattering it.Research by the FDA on the safety of the main three organic UV filters (oxybenzone, homosalate and octocrylene) found that the three ingredients could be detected on the skin, in blood, in ****** milk and in urine samples weeks after no longer being used.Medical organizations such as the American Cancer Society recommend the use of sunscreen because it aids in the prevention of squamous cell carcinomas. The routine use of sunscreens may also reduce the risk of melanoma. However, many sunscreens do not block ultraviolet A (UVA) radiation, yet protection from UVA is important for the prevention of skin cancer.To provide a better indication of their ability to protect against skin cancer and other diseases associated with UVA radiation (such as phytophotodermatitis), the use of broad-spectrum (UVA/UVB) sunscreens has been recommended.In the United States, sunscreens are required to remain effective at original strength for at least three years. Some sunscreens include an expiration dateโa date indicating when they may become less effective.Diligent use of sunscreen can also help to slow or temporarily prevent the development of wrinkles, dark spots and sagging skin.
Base on your experience, mabilis ba mang-block si araw kapag hindi direct from retailer yung TU50?
(ako mismo nag reg. via sms)
Hindi naman ako heavy user. Mga 1gb/day lang.
Sana may pumansin...๐
Mga kaPhc, may alam ba kayong way para mashare yung internet ng VPN? I'm currently using a vpn(sun tu promo) and yung smart tv kase eh hindi maaccess yung internet from the Vpn, pero kapag legal internet naman gumagana siya. Baka po mayroon kayong suggestions?
GoodDay mga kaPHC! Ask ko lang po kung wala ng pag-asa itong sun sim ko.
Hindi na siya nakakapagsend ng messages/call. At nag-uunblock ako thru customer support pera ngayon ayan nalang lumalabas kaya di ko na rin siya maiunblock, hindi ko narin mapasa yung 100load sa iba
pang sim
.
Ako na block na direct tu50. Sa 1st 10days okay pa. Peri after ko ma expire at nagpaload ulit ng direct tu50 na block na ako. Ang saaaaad! Ngayon kakabili ko bagong sim tas nagpaload ako sa nablock ko na sim at give tu50 sa bagong sim. Sana di ma block!
MgakaPHC nablock yung pangalawang sun sim ko 1day palang nung nagpaload ako. iTatry ko sana yung unblocking trick na roam off/on. Pwede ba ako magpaload kahit blocked na yung sim ko?
Hi guys!!
Gusto ko lng mlaman s inyo kng nraranasan nyo din ba ma block NG 20x s isang araw.
Grabe na si haring araw galit na galit sakin.
BTW, I'm using tu150
Di nako maka pag unblock trick naka lagay sakin this service is currently not available please try again later pag via text naman failed to send sa 222.pano kaya gagawin ko dito sayang sim load di ma transfer sa new sim :(