Get Rid of Acne Blemishes by Mariah Stein Get Rid of Acne Blemishes DIY Remedy - Minimize mark that a blemish may leave by mixing 1/2 teaspoon baking soda and 1/2 teaspoon distilled water to create a paste. Apply to affected area for 5 minutes;splash off. After, use cotton swab to dab on hydrogen peroxide. Prevents darkening. Worth a try!