15 chemical sunscreen agents in 220 batches of sun-proof products were tested,and the test results were checked with the product labels and approvals,and the problems found were compared and analyzed.There were some i...15 chemical sunscreen agents in 220 batches of sun-proof products were tested,and the test results were checked with the product labels and approvals,and the problems found were compared and analyzed.There were some inconsistencies among the actual ingredients,labeling ingredients and approval ingredients in the sun-proof products on the market,and the problem of insufficient input of raw materials was prominent.The supervision of this kind of products should be strengthened so as to reduce the safety risk of consumers using this kind of products.展开更多
The synergistic effect and mechanism of two chemical sunscreens,BEMT and MBBT,have been studied.UV absorption spectrum study suggested that UV absorption peaks of BEMT and MRRT shifted when the polarities of solvents ...The synergistic effect and mechanism of two chemical sunscreens,BEMT and MBBT,have been studied.UV absorption spectrum study suggested that UV absorption peaks of BEMT and MRRT shifted when the polarities of solvents varied.In ethanol,a typical semi-polarity solvent,UV absorption capacity of BEMT was reduced compared to its capacity in a non-polarity solvent of isooctane.While the addition of MBBT can offset the impact of solvent polarity.In terms of emulsions with BEMT as the only sunscreen agent,in vitro test indicated that SPF increased as the solvent polarity rose,and the addition of MBBT can offset this impact.Sunscreen efficient can be significantly enhanced via combining water phased and oil phased sunscreen agents.展开更多
文摘15 chemical sunscreen agents in 220 batches of sun-proof products were tested,and the test results were checked with the product labels and approvals,and the problems found were compared and analyzed.There were some inconsistencies among the actual ingredients,labeling ingredients and approval ingredients in the sun-proof products on the market,and the problem of insufficient input of raw materials was prominent.The supervision of this kind of products should be strengthened so as to reduce the safety risk of consumers using this kind of products.
文摘The synergistic effect and mechanism of two chemical sunscreens,BEMT and MBBT,have been studied.UV absorption spectrum study suggested that UV absorption peaks of BEMT and MRRT shifted when the polarities of solvents varied.In ethanol,a typical semi-polarity solvent,UV absorption capacity of BEMT was reduced compared to its capacity in a non-polarity solvent of isooctane.While the addition of MBBT can offset the impact of solvent polarity.In terms of emulsions with BEMT as the only sunscreen agent,in vitro test indicated that SPF increased as the solvent polarity rose,and the addition of MBBT can offset this impact.Sunscreen efficient can be significantly enhanced via combining water phased and oil phased sunscreen agents.
