This review conducted to compare the difference of the formulation of nanoemulsion cosmetics by plant extracts between Centella asiatica, seed oil from Rubus idaeus, Phyllanthus urinaria, Garcinia mangostana L., Vellozia sauamata, and Cordyceps militaris extract. Materials and methods was taken from several literature in valid databases that focuses on current status of the formulation of nanoemulsion and its characteristics, nanoemulsion cosmetics, and formulation of nanoemulsion cosmetics that are made by plant extract as the active ingredient. Comparison of the formulas above can be seen from various aspects. Referring to each article, 4 out of 6 formulas use high energy techniques and the rest use low energy techniques. Formula 1, 3, 6 use high energy technique with high pressure homogenization, and formula 4 uses ultrasonication, which is still a high energy technique. Formulas 2 and 5 use low energy techniques, namely formula 2 using Phase Inversion Composition (PIC) and formula 5 using Phase Inversion Temperature (PIT). High-Pressure Homogenizer (HPH) is the most widely used for the manufacture of nanoemulsions. In terms of formula, the use of components such as surfactant, cosurfactant, oil phase, and water phase is also different from the 6 formulas presented. Even though all of the six formulas are different, the active ingredients in the form of nanoemulsions need to be tested until finally the goal of the cosmetic product is achieved.

This review is aimed at looking at the Covid-19 vaccine, formula and comparison of mRNA (Moderna and Pfizer) and adenovirus vector (AstraZeneca) vaccines that have been circulating in terms of administration, effectiveness, safety, side effects, contraindications, and in terms of price. This review was conducted by taking some literature from a database that focuses on the Covid vaccine, the development of the Covid vaccine, the Moderna vaccine, the Pfizer vaccine, and the AstraZeneca vaccine. Three vaccines, 2 were mRNA-based vaccines (Moderna and Pfizer) and 1, namely AstraZeneca, was based on adenovirus vectors. The results obtained are from international journals with the keyword comparison of mRNA vaccine and adenovirus vector, then the results show that the comparison can be seen through the method carried out. Some vaccines have their own advantages and disadvantages. When viewed from several aspects, such as administration which has different doses. Then seen from the effectiveness of the three vaccines have a sufficient value because they are above 80%. For safety, it has passed clinical trials in humans, but there are still shortcomings in each vaccine of course. Vaccines derived from mRNA (Moderna) are the most expensive vaccines because of the highest safety.