Sunscreen – Physical vs. Chemical
Tuesday, May 15th, 2012We can place all sunscreens into one of two categories: Physical or Chemical. Chemical sunscreens utilize chemical ingredients to absorbe while physcial sunscreens are blockers reflecting UV rays. The use of chemical absorbers is popular as it is easier and cheaper to produce which is why you find this a popular product offering in the ‘low-end’ products. However, many chemical-absorbers can provide less than adequate UV protection on thier own and must be supplemented with other product for adequate protection. Most important be aware that research has revealed that many of these chemical ingredients do not protect against UVA rays, the highly dangerous (aging) rays which are known to penetrate deeper into the skin and pose an even greater threat. This has been linked to increases in melanoma as well as photaging by degrading the collagen and elastin.
The new FDA label requirements for sunscreen products must now note if product includes UVA protection (full spectrum). All new UVA/UVB protection labels will now read ‘broad-spectrum SPF’ and only those of SPF 15 or greater can claim to reduce the risk of skin cancer and photodamage. We strongly suggest the use of SPF 30 or higher as it provides 97% protection from UV damage.
Physical blockers have been shown to be more effective in protecting abainst both UVA and UVB rays. Titanium dioxide and zinc oxide are the two most common physical blockers. There are naturally occurring ingredients used in top quality full UV spectrum products. The only downside to these natural blockers is that chalky tecture that can accompany some products.
For a list of ‘Full Spectrum’ sun protection products visit: Full Spectrum Sun Protection Products







