Cosmetic Products Based on Microemulsion Oil / Water Extracts of Lime (Citrus aurantifolia), Turmeric (Curcuma longa Linn.) And Carrots (Daucus carota L.)

The aim of long term research is production of cosmetics based on herbal oil in water (O/W) microemulsion. Microemulsion use food grade grade surfactants and are non ionic. Formulation O/W microemulsion is mixture of virgin coconut oil (VCO)  : surfactant = 15 : 85 (v/v), surfactant regulated by hydrophilic lipophilic balance (HLB) 14.5 with a mixe of tween 80, span 80 and tween 20 and water content 67%.  Specific research targets were O/W micoemulsion of lime extract (Citrus aurantifolia), tumeric extract (Curcuma longa Linn) and carrot extract (Daucus carota L.). Tumeric and carrot symplesia were extracted using VCO solvent with maceration  method for 48 hours, symplesia tumeric/carrot : VCO = 1 : 2 (w/w), which then used as the oil phase. Lime  extract was adjusted to pH 4.5; 5.5 and 6.5 using a buffer then used as a water phase. The test includes stability for storage for 8 weeks, stability on pH , stability on dilution (1:1; 1:9; and 1:99), and  antioxidant activity. Stability was measured base on the O/W turbidity index. The size of particle was measured using Scanning Electron Microscope (SEM) and peroxide value was measured using ferry tiocyanate.