| Skincare products are among the items that the general population used on daily basis. People's desire for a bright skin tone has led them to seek out skincare solutions that help maintain or brighten the skin. The coconut (Cocos nucifera L.) haustorium has high nutritional value and functional efficacy for health and beauty promotion. Here, the purpose of this research was to determine formulations, characterizations, and functional efficacies of face serum products containing coconut haustorium extract. The stages of this research included preparation, extraction, identification, formulation, characterization (pH, water content, viscosity, and humidity tests), and functional efficacy (SPF, antioxidant effect, and inhibition of tyrosinase activity). Whole coconut haustorium fruit passed through the drying stage and yielded 26.11±4.04% of haustorium powder. Next, powder was extracted and yielded 9.57±1.46% of haustorium oil. Coconut haustorium extract was applied for face serum production in the form of ethosomes and transfersomes, because of their ability to penetrate deeper into the skin. In this research, extracts were prepared at various concentrations (0.1, 1, 5, 10, and 100% oil extract), while face serum were made in 2 forms (ethosomes and transfersomes) with 3 distinct formulas (negative control, positive 0.1, and 1%). The pH value of face serum was 7, viscosity and moisture content ranged from 35 to 175 mPa.s, and 73.3386.22, sequentially. After 28 days of use, serums showed an increase in moisture on the panellists' skin. For cosmeceutical efficacy of extracts and serums were ranging from 17.04-70.40% (antioxidant activity), 3.67-38.00 (SPF value), and 9.0345.92 (tyrosinase inhibitory activity). These data suggest that coconut haustorium extract had cosmeceutical ingredients and its face serum products could be applied as daily skincare to prevent melanin synthesis by inhibiting tyrosinase activity. |