Abstract: Adding aloes extracts in oil-in water emulsion,influences of aloes extracts dosage,temperature and ultraviolet light on peroxide value of emulsion cosmetics and hydroxyl free radical scavenging capacity were investigated.The results showed that the peroxide value of emulsion with addition of  8 mL aloes extracts for 5 hours decreased by 20.64% compared with that without addition of aloes extract.After 5 hours of UV irradiation,the peroxide values of emulsion with addition of aloes extracts decreased by 16.73% compared with that  without aloes extract.After being heated at 40 ℃ for 5 hours,the peroxide values of the emulsion with addition of aloes extracts decreased by 21.76% compared with that  without aloes extracts.The hydroxyl free radical scavenging capacity experiment shows that adding aloes extract in emulsion,the scavenging rate can increase by 5.5 times.

Key words: aloes extract, oil-in water emulsion, anti-oxidation