防晒霜化学成份（Sunscreen ingredients）.doc

防晒霜化学成份（Sunscreen ingredients） When choosing a sunscreen, just look at the superficial, it should not be the SPF value, PA value, not only by the skin feel that it is not clear, is not gentle. An ideal sunscreen should be able to provide protection against UVA and UVB, the effective ingredients contained in the sun does not decompose, effective and non effective ingredients are safe for adult children. Evaluation of effective components of the sunscreen is also mainly from three aspects: evaluation of UV protection capability, stability and health hazards. Theoretically, compounds can absorb ultraviolet light, as long as it has enough safety and good solubility, can be used as UV absorbers. But because of the safety evaluation of ultraviolet absorbent is a complex long-term process. All countries strictly control the use of UV absorbers. Such as the United States the ultraviolet absorbent as OTC drugs to manage. Although the company developed a variety of structure of UV absorber, but was approved the use of ultraviolet absorbent type co.. Sunscreen agents currently approved by FDA 17, while the European Union has approved 29, China approved 28. Below is a brief description of some mainstream sunscreen (green label is to use in China). 1. Octinoxate (Octyl methoxycinnamate) octyl methoxycinnamate This is the most widely used UVB sunscreen (behind not specifically pointed out are UVB sunscreen), small skin irritation, but the observed effects of estrogen in the animal experiment. 2. Oxybenzone two -3 phenyl ketone Associated with allergic reaction, and will have a significant amount of absorption through the skin. 86 the substance found in the urine samples of 90 6 to 8 year old girls in. 3. Octisalate octyl salicylate This is a weak UVB absorbent, but relatively safe, absorption will increase the amount of other ingredients in the skin. 4. Titanium dioxide titanium dioxide Hardly absorbed by skin, no harm to health reports, more than 70% of the use of sunscreen. 5.