The invention relates to a cosmetic composition without a preservative. The cosmetic composition is prepared from, by mass, 0.5-5% of salicylic acid/dextrin/xanthan gum/amylopectin, 0.1-3% of aloe extract, 0.4-1% of p-hydroxyacetophenone, 0.5-10% of oat beta-glucan, 0.01-10% of herba centellae extract, 1-3% of 1,2-pentanediol and the balance auxiliary materials. The invention further provides application of the composition. The composition can perform the effects of resisting bacteria and diminishing inflammation, repairing wound scars, replenishing moisture and preserving moisture, and improving sebum secretion, and can be used for repairing various skin damages including acne. Besides, the composition does not contain a preservative, so that the irritation and influence on the skin by cosmetics are effectively relieved, and discomfort of the facial skin is not likely to be caused; the cosmetic composition is mild, free of irritation and suitable for crowds with various skin types.