Apple Cider Vinegar Facial Toner. Malic and lactic acids found in the vinegar help to soften and exfoliate your skin, reduce red marks, and treat acne on both your face and body. Apple cider vinegar also tones your skin to the proper pH and gives you that ‘glow’ – naturally! . So basically, it's a wonderful beauty secret hiding in your kitchen cupboard! ....did I mention how cheap this is?!