Porphyridium cruentum is one of the microalgae that has antioxidant capacity. These antioxidants are useful for the cosmetics and pharmaceutical industries. The purpose of this study was to obtain antioxidants from P. cruentum which will be used in cosmetic products as a cream. P. cruentum was extracted by maceration method for one hour with water as solvent (5 g/L) and encapsulated using maltodextrin with a spray dryer. The variable concentration of maltodextrin was 50 g/L, 100 g/L, and 150 g/L. Characterizations observed for encapsulated microalgae extracts were the antioxidants capacity and proximate analysis; hence for cosmetic cream were the antioxidants capacity and microbiological contaminant. The best result was P. cruentum extract encapsulated with maltodextrin 50 g/L which gave antioxidant capacity as AEAC 7.07 mg vit. C/100 g sample and IC50 484.09 mg/mL. The cosmetic cream with addition encapsulated P. cruentum extract gave antioxidant capacity as AEAC on 8.12 mg Vit. C/g sample and IC50 29.08 mg/mL. The microbial and heavy metals contaminant for cream were below the threshold according to BPOM regulation. Based on these results, the P. cruentum has the potential to be used in the cosmetics industry.