1. Avoid washing face too often. It is advisable to do it up to three times per day. Constant washing may dry out your skin intensifying your risk to irritations that may even produce acne. However, in cases the skin is too dry, your lymph glands will create more oil to balance for this loss. Mild water is the best, because it reduces risk of opening pores.This explains that the risk of getting too much sebum also grows. 
2. Do not use intense, especially bar form soaps and cleansers. Their ingredients can block your pores, strip off natural lipids, suffer your skin, and can help produce breakouts. Choose cleansers that are mild, gentle and soap-free. Reduce your cleanser with enough water when you wash your face. 
3. Alcohol cleansers will lower your face’s natural pH level, causing irritation. Use astringents and toner in usual manner. Do not over use them, because they will irritate your skin. 
4. Instead of just using products, it is important to know your skin type. If your skin is dry, buy products with glycerin or cocoa butter. Benzoyl peroxide, salicylic acid or citric acids are the main product ingredients for oily skin. Chamomile, aloe Vera and almond oil is recommended for sensitive skin. 
5. Be careful with facial soaps and cleansers because they produce a hidden residue behind which can clog your pores. Rinse face carefully up to three times to remove these residuals. 
6. At the end dry your face with soft and gentle towel. Use light moisturizer after cleansing to recover lost of natural oils. Products that contain vitamin E or aloe Vera is best for intensive moisture. 

There are many other ways and advises how to protect properly your skin. If you act properly you can prevent acne occurs. If you already suffer from acne I can suggest you to try proved acne spot treatment products you can apply from your home. But remember, anything that you do, do simple and moderate. Expose your best face foreword.