Nanostructured Lipid Carriers (NLC) are lipid-based carrier system that use a matrix combination in the form of solid and liquid which are stabilized with the addition of surfactant. This NLC was developed to facilitate the dispersion of hydrophobic bioactive compound in a hydrophilic system. This research aims to get the right formulation and can develop stable characterization, using solid lipids Poloxamer and Stearic Acid with liquid lipids Soybeans Oil using surfactant Tween 80 and co-surfactant Propyleneglycol.. The to make the formulation of NLC with a ratio of poloxamer and stearic acid as solid lipid: soybeans oil asliquid lipid is 3:3, 4:2, 5:1 ,surfactant tween 80 and co surfactant propyleneglycol. Test the NLC characterization including PH value, viscosity, particle size, and polydispersity index. Data analysis used to evaluate the characteristics of the obtained NLC using descriptive. The result of the research showed that NLC had good characteistics at a solid lipid poloxamer and stearic acid with Soybean oil liquid lipid ,pH in the range 4-6; good viscosity; good particles have a range of 1000nm; and polydispersity index which shows the results of monodispersion. Nanostructured Llipid Carriers with solid lipid poloxamer and stearic acid and liquid lipid soybean oil obtained good characteristics.

Nutmeg seed oil is one of essential oil which unstable in storage. The stability of nutmeg seed oil can be improved by being formulated into an emulgel with carbopol 940. This study was to determine the physical stability and SPF value of nutmeg oil emulgel in vitro with carbopol 940 as a gel base. Nutmeg seed oil emulgel was made with 10% nutmeg seed oil concentration and variation of carbopol 940 base, namely 0.60% (FI), 0.80% (FII), and 1.0% (FIII). Nutmeg seed oil emulgel was tested for physical stability including organoleptic, homogeneity, adhesion, dispersibility, viscosity, pH, and SPF value in vitro. Evaluation of physical stability and SPF value of nutmeg oil emulgel was carried out for 30 days of storage at 30±2°C with RH 65±5%. Quantitative data from evaluation of physical stability and SPF value were analyzed by t-test dependent. All the physical parameters showed no significant changes (p > 0.05). Emulgel were white, thick, with nutmeg seed oil odor. pH were in safe range for skin (6.12-6.90). Nutmeg seed oil emulgel had pseudo plastic rheology in day 0 and it changed into pseudoplastic-tixothropic on day 30.  The SPF value of nutmeg seed oil emulgel FI, FII, and FIII were above 8 and it did not showed significant change after 30 days of storage (p > 0.05). The SPF value of nutmeg seed oil emulgel were categorized as maximum protection.

Coenzyme Q10 (Co-Q10) or Ubiquinone is an antioxidant that is unstable to light and is highly lipophilic causing instability during storage, so a Nanostructured Lipid Carrier (NLC) delivery system is needed that can improve stability. The manufacture of NLC uses the emulsification method by melting two types of lipids, namely solid lipid cetyl palmitate and liquid lipid alpha tocopherol with the help of stirring using a magnetic stirrer. The purpose of this study was to determine the characteristics and stability of NLC Co-Q10 at various stirring times. The results of testing the characteristics NLC Co-Q10, that stirring for 6 and 9 minutes, obtained pH values of 6,64 and 6,62 with particle sizes of 215.03 nm and 188.25 nm, the entrapment efficiency values were 75.57% and 77.96%, respectively. Increasing the speed and duration of stirring in the manufacture of the NLC Co-Q10 system will obtain high trapping efficiency values and be more stable in storage at room temperature for 28 days.Keywords: coenzyme Q10, emulsification, nanostructured lipid carriers, stability.

Antioxidant Coenzyme Q10 (CoQ10) has properties as a sunscreen that can protect the skin from the aging process accelerated by UVB rays. Linseed oil (LO) formulated in cosmetics aims to find out the characteristics of moisturizer liquid foundation with LO as oil phase. In this study, cosmetic formulations were carried out using a modified method of emulsification evaporation. In the moisturizer liquid foundation CoQ10, three other formulas were used with LO concentrations of 3%, 5%, 7% to determine the effect of vegetable oils used on cosmetic characteristics. Evaluation of physical properties includes organoleptic, pH, viscosity, spreadability, and adhesivity. Evaluation of the acceptance of preparations was carried out to 15 panelists. The results of the study showed that the use of LO influences the characteristics of moisturizer liquid foundation CoQ10. The increase in LO concentration increases viscosity value, adhesivity, and decreased pH and spreadability, but the results obtained still meet the criteria. The results of the hedonic test showed no significant difference from the three formulas of 0.911 (P>0.05). It was proven that the panelists preferred formula one, which has a texture that is not too thick.

Ubiquinone-10 is a cellular endogenous antioxidant that resides in the epidermal layer. Ubiquinone-10 can increase the production of basal membrane components, fibroblast proliferation and protect cells from oxidative damage, so with increasing age, the amount of Ubiquinone-10 body will decrease. Bioavailability and permeability of Ubiquinone-10 are very low, thus affecting the potential efficacy and absorption in Ubiquinone-10. The preparation of Ubiquinone-10 formulation needs to be done to obtain products that have good bioavailability. Nanostructured Lipid Carrier (NLCs) is a modification of the SLN system, consisting of a certain amount of lipid matrix and liquid lipids. Mixtures of solid lipids and liquid lipids can provide space for drug trapping. The system will remain in solid form by controlling the concentration of the liquid lipids to be added into the formula so that the drug release process can be controlled.