Many methods of in vitro SPF evaluation have been developed in order to measure SPF of sunscreen products. In this study, we compared two spectrophotometric in vitro measurements using the skin cast made of Luviset CAP- $X^{R}$ resin and Transpor $e^{R}$ tape as substrate with two in vivo measurements using guinea pig and human. And we also observed the radiation reaching on the earth's surface in Seoul for one year and the change of the primary skin irritancy along the change of SPF value. According to the our research, the first, in vivo measurement using guinea pig had the close agreement with SPF measurement using human and showed the tendancy that guinea pig SPF was lower than human SPF. The second, there was the good relationship between in vitro SPF by using Transpor $e^{R}$ tape and in vivo SPF, and it is possible to predict human SPF from Protection Index(PI) by using tape. The third, it is thought that SPE 20 is reasonable value because of UV intensity in Seoul and the primary skin irritancy of higher SPF than 25. So we propose that it is important to distinguish the sunscreen product having higher than approximate 25 from the category of general cosmetics including lower SPF sunscreen product.oduct.

The dosal sites of 61 Koreans were exposed to increasing UVB doses in the 10mJ/$\textrm{cm}^2$ interval from 10mJ/$\textrm{cm}^2$ to 100mJ/$\textrm{cm}^2$ by solar-simulator, and at the 24hr after UV-B exposure we determined the first MED (Minimal Erythema Dose). For the precise measurements, we peformed the second exposures arround the first MED with 2.5mJ/$\textrm{cm}^2$ interval. The mean MED of all volunteers was 39.6 $\pm$ 15.7mJ/$\textrm{cm}^2$. As the distinction of sex, the means of male and female were 46.9 $\pm$ 18.1mJ/$\textrm{cm}^2$ and 31.5$\pm$8.5mJ/$\textrm{cm}^2$ respectively. According to the classification of skin type by Greiter. F.(1), the percent of skin type I to Ⅵ were 10.9%, 36.4%, 34.6%, 12.7%, 3.6%, and 1.8% respectively.

To investigate the effect on the antimicrobial activity against S.aureus ATCC 6538, E.coli KCTC 1039 and cell toxic level against transformed mouse fibroblast L929 in formula added with various concentrations of UVB blockers commonly used in cosmetic products, these experiments were carried out by preservative efficacy testing methods and in vitro cytotoxicity methods. The results obtained were as follow ; 1) Octyl Dimethyl PABA had a broad antibacterial spectrum against the Gram (+) and the Gram(-) bacteria at 5.84 % concentration, but not Octyl Methoxycinnamate. 2) Antibacterial activity was decreased in a combined UVB blocker system of squalane base. Especially, Octyl Dimethyl PABA was inactivated by Octyl Methoxycinnamate at 5.84% concentration to a large extents , but not 4-Methylbenzylidene Camphor. 3) Within in vitro cytotoxicity by use of mouse fibroblast L929 on UV-B blockers, NR assay was more excellent than MTT assay on quantitative

It is well hewn that ultraviolet light(UV) penetrates into the skin depends on the wavelength and causes many biochemical reactions in the skin. The enormous amount of information reveals that UV effects sun-burn, sun-tan and photoaging etc. In addition to these, it is now recognized that UV initiates immuno-suppression, and associated with this, skin cancer. In this review, I tried to illuminate the processes of injurious effects of UV on the skin.

모든 사람들은 건강하고 행복한 삶은 누리기 위하여 꾸준히 노력하여 왔고 앞으로도 계속 노력할 것입니다. 또한 경제개발의 성공적 성장을 이룩함과 더불어 풍요한 사회를 이룩하기 위하여 각 분야에서 눈부신 발전을 거듭하고 있습니다. 약사관계 제법령은 국민의 생명, 건강에 직접 또는 간접으로 관계되는 의약품을 비롯한 의약부외품, 화장품, 의료용구 및 위생용품에 관하여 필요한 사항을 규정하고 적정을 기하며, 국민보건향상에 기여함을 목적으로 합니다. 약사법은 1953년 12월 18일 제정 공포되어 그동안 11회 개정된 바 있습니다. 약사법이 인체에 대한 안전성의 확보를 강조하다 보니, 일부에서는 규제 일변도의 법률로 오해를 받기도 했었으나, 근본 취지는 법적인 규제를 통한 국민보건의 향상과 국내 관련 산업의 발달과의 조화에 있습니다. 1991년 12월 31일자로 개정된 약사법과 92년 6월 30일자로 개정된 약사법시행규칙에서 화장품에 관련된 규정은 의약품과 그 안전성 및 특성에 차이가 있으므로 화장품의 특수성이 어느정도 반영되어 표시기재사항과 광고관련 규정이 의약품과 차별화된 바 있습니다. 개정된 약사법중 화장품과 관련된 부분을 살펴보면 다음과 같습니다.

In these days sun products are developed and produced by the cosmetic scientists in the world. Peoples need strongly to protect themselves from the hazardous UV rays dued to the destruction of ozone layer. Therfore, we, cosmetic scientists must have an effort to produce the more effective goods. In this article the market survey of sun-products as well as the currency of sunscreen agents was investigated. It was found that Benzophenone - 3 and Ocytyl methoxy cinnamate were widely used. The lotions, using Benzophenone - 3 as the chemical agents, and TiO$_2$and micro TiO$_2$ as the physical agents, were measured the UV-Spectrum in the Dilution and Application method. Photoprotective activity of chemical agents can usually be measured in solution state. However, that of the insoluble physical agents such as TiO$_2$is hardly measured in this state. Photoprotective ability of the insoluble physical agents was able to be measured by application of lotions to the surface of UV cells. It was found by this method that micro TiO$_2$showd stronger UV scattering effect than TiO$_2$in this method.